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Witches' Brew Halloween Cake Jars for Spooktacular Treats

Published: Oct 1, 2025 by Sierra Lane · This post may contain affiliate links · Leave a Comment

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As I strolled through the pumpkin patch last fall, I couldn't shake the feeling that Halloween deserved more than just candy. That’s when I conjured up the idea for Witches' Brew Halloween Cake Jars, a delightful dessert that packs all the spooky magic of the season into single-serving jars. Not only are these little wonders visually enchanting, but they also promise a quick prep time, making them a perfect choice for those busy weeks leading up to Halloween. With layers of rich, chocolatey cake and vibrant buttercream, anyone can create a crowd-pleasing treat that’ll have guests spellbound. Are you ready to impress your friends with a showstopping dessert that'll cast a sweet spell on their taste buds?

Witches' Brew Halloween Cake Jars

Why Will You Adore This Cake?

Delightfully Spooky: Each jar is a charming embodiment of Halloween spirit, brimming with colorful layers that are almost too cute to eat.

Effortless Preparation: This recipe requires just basic baking skills, making it an accessible treat for everyone—from busy parents to novice bakers.

Irresistible Flavor Combination: The rich chocolate cake paired with creamy green buttercream creates a deliciously unique taste that surprises and delights.

Perfect for Sharing: These individual jars make serving easy and fun, ensuring everyone gets a taste of the festive magic without messy cutting and serving.

Customization Galore: From changing colors to adding your favorite sprinkles, you can easily tweak this recipe to match your Halloween vibe, like the delightful options found in our Moscato Layer Cake or Strawberry Roll Cake.

Get ready for compliments—a treat that’s as appealing to the eyes as it is to the taste buds!

Witches' Brew Halloween Cake Jars Ingredients

For the Cake
• 330 g self-raising flour – This is the base of our cake, lending a delightful fluffiness.
• 360 g granulated sugar – Sweetness is key; it balances the chocolate flavor perfectly.
• 360 g butter – Rich, creamy butter ensures moisture and an indulgent taste.
• 6 eggs – These provide structure and richness to our cake.
• 30 g unsweetened black cocoa powder – Adds a deep chocolate flavor and a spooky color.
• 1½ teaspoon baking powder – Helps the cake rise to perfection.
• ½ teaspoon salt – Enhances all the flavors for a well-balanced cake.
• 90 ml milk – Adds moisture and helps with mixing the ingredients smoothly.
• 2 teaspoon vanilla extract – For that warm, familiar flavor bursting through!

For the Buttercream
• 400 g salted butter – The base for a toothsome buttercream, balances sweetness.
• 800 g powdered sugar – Creates a sweet, fluffy texture essential for icing.
• 1¼ teaspoon vanilla extract – Infuses the buttercream with creamy vanilla notes.
• 2 tablespoon milk or cream – Optional for adjusting the buttercream consistency if too stiff.
• Electric green food coloring – Just a few drops turn your buttercream into a spooky hue.

For the Decorations
• 250 g orange fondant – Perfect for sculpting festive decorations or spooky shapes.
• 200 g black fondant – Adds another layer of fun and festive flair to your jars.
• 1 tablespoon CMC powder – Helps stabilize your fondant creations.
• Sprinkles – A fun way to add texture and extra festivity to your dessert!

Get your Halloween spirit brewing with these Witches' Brew Halloween Cake Jars, and let the magic happen in your kitchen!

Step‑by‑Step Instructions for Witches' Brew Halloween Cake Jars

Step 1: Preheat and Prepare
Begin by preheating your oven to 170 degrees Celsius. While the oven warms up, grease and flour a 9-inch square cake tin to ensure your Witches' Brew Halloween Cake lifts easily once baked. Set aside the prepared tin, ready for the delicious batter that's about to be made.

Step 2: Cream the Butter and Sugar
In a large mixing bowl, cream together 360 g of butter and 360 g of granulated sugar using an electric mixer on medium speed. Continue mixing for about 2 minutes, until the mixture becomes light and fluffy, resembling clouds. This step is crucial for creating a tender cake, providing a delightful texture.

Step 3: Incorporate the Eggs
Next, crack the 6 eggs into a separate bowl and add them to your creamed mixture two at a time. Beat well after each addition, allowing the eggs to fully blend in for about a minute. This creates a rich, smooth base, essential for the flavor of your Witches' Brew Halloween Cake.

Step 4: Mix the Dry Ingredients
In a separate bowl, whisk together 330 g of self-raising flour, 30 g of unsweetened black cocoa powder, 1½ teaspoons of baking powder, and ½ teaspoon of salt. Once well combined, sift this dry mixture into the butter and sugar mixture in three batches, alternating with 90 ml of milk. Gently fold in 2 teaspoons of vanilla extract until just combined.

Step 5: Bake the Cake
Pour the cake batter into the prepared cake tin, spreading it evenly with a spatula. Place in the preheated oven and bake for 45 to 50 minutes, or until a skewer inserted into the center comes out clean. Once baked, allow the cake to cool in the tin for 2 to 3 minutes before transferring it to a wire rack to cool completely.

Step 6: Prepare the Buttercream
To create the vibrant buttercream for your jars, start by creaming 400 g of salted butter in a mixing bowl until smooth. Gradually add the sifted 800 g of powdered sugar, mixing on low speed to avoid a sugary cloud. Incorporate 1¼ teaspoons of vanilla extract and, if necessary, add 2 tablespoons of milk to achieve your desired frosting consistency, then mix in electric green food coloring until you achieve a bright and spooky hue.

Step 7: Cut and Level the Cake
Once your cake has cooled completely, level the top by trimming it with a serrated knife. Slice the cake horizontally into two equal layers. Using a round cutter, cut out 9 circles from each layer, yielding a total of 18 cake pieces perfect for assembling your Witches' Brew Halloween Cake Jars.

Step 8: Assemble the Cake Jars
To assemble the cake jars, optionally start by adding a small layer of sprinkles at the bottom of each jar. Place a circle of cake in each jar, followed by a piping of your green buttercream. Repeat the layering process with another cake circle and a second layer of buttercream, making sure to create a visually appealing contrast.

Step 9: Create the Festive Decor
For the fun finishing touch, use a wooden skewer to poke holes in each assembled cake jar. Carefully insert your prepared fondant witch legs into the holes, creating an enchanting Halloween scene. Complete the decoration with additional sprinkles on top, transforming your Witches' Brew Halloween Cake Jars into delightful, spooky treats!

Witches' Brew Halloween Cake Jars

Witches' Brew Halloween Cake Jars Variations

Feel free to transform your delightful jars into a custom creation with these fun ideas!

  • Chocolate Lovers: Substitute part of the self-raising flour with additional cocoa powder for a rich, chocolaty twist. This will enhance the cake's deep flavor, perfect for those who crave chocolate.

  • Vegan Version: Swap the eggs with flax eggs and use dairy-free butter and plant-based milk to create a vegan-friendly treat. You’ll be surprised at how similarly delicious they turn out!

  • Gluten-Free: Use a gluten-free flour blend instead of self-raising flour to accommodate dietary restrictions. The cake will still rise beautifully and maintain its scrumptious taste.

  • Nutty Addition: Add chopped nuts like walnuts or hazelnuts into the cake batter for a lovely crunch and nutty flavor. This twist creates a delightful texture that contrasts with the creamy buttercream.

  • Sweet Heat: Incorporate a dash of cayenne or chili powder into your buttercream for a subtle spicy kick that beautifully contrasts the sweet flavors. It’s an unexpected surprise that your friends will love!

  • Fruit-Filled: Layer other flavors by adding a thin layer of fruit preserves or pureed fruit like raspberry or strawberry between cake and buttercream layers. This not only adds flavor but also a lovely pop of color.

  • Mini Jars: Instead of larger jars, opt for mini versions to create bite-sized treats. These make the perfect favor for a Halloween party, allowing guests to indulge in a little sweet without overdoing it.

  • Festive Sprinkles: Use themed sprinkles for different holidays. Whether googly-eyed sprinkles for Halloween or chocolate stars for Christmas, you can switch it up year-round!

These variations will ensure your Witches' Brew Halloween Cake Jars are not only visually appealing but also filled with flavors that match every palate! For more inspirations, check out our delicious Banana Cake Roll or our enchanting Cherry Poke Cake.

Make Ahead Options

These Witches' Brew Halloween Cake Jars are a splendid choice for meal prep lovers looking to save time during the festive season! You can bake the chocolate cake up to 3 days in advance, allowing it to cool completely before wrapping tightly in plastic wrap and refrigerating to maintain its moisture. Additionally, the buttercream can be prepared up to 2 days ahead; simply store it in an airtight container in the fridge. When you're ready to assemble, take the cakes and buttercream out, and re-whip the frosting if needed for a smooth texture. Layer the jars with cake and buttercream just before serving for a fresh, delightful experience that will make your guests swoon!

How to Store and Freeze Witches' Brew Halloween Cake Jars

Fridge: Store your assembled cake jars in the refrigerator for up to 3 days. Make sure to cover them with plastic wrap or put them in an airtight container to keep them fresh and moist.

Freezer: For longer storage, these Witches' Brew Halloween Cake Jars can be frozen for up to a month. Wrap each jar tightly in plastic wrap and then in aluminum foil to prevent freezer burn.

Reheating: If you want to enjoy them warm, remove the jar from the fridge or freezer, and let it thaw in the refrigerator overnight. For a quick warm-up, remove the lid and microwave the jar for 15-20 seconds before indulging!

Decorating Tip: If frozen, add the fondant and sprinkles after thawing and just before serving for the best texture and appearance.

What to Serve with Witches' Brew Halloween Cake Jars

Elevate your Halloween celebration with delightful accompaniments that complement the enchanting flavors of these cake jars.

  • Pumpkin Spice Latte: This seasonal favorite brings warmth and aromatic spices, enhancing the cozy Halloween vibe.

  • Caramel Apples: Crisp apples drizzled with sticky caramel add a crunchy texture that contrasts beautifully with the soft cake layers.

  • Chocolate-Covered Pretzels: The salty-sweet pairing of chocolate-covered pretzels offers a satisfying crunch that balances the sweetness of the cake.

  • Roasted Pumpkin Seeds: A simple yet crunchy snack that adds an earthy flavor, perfect for nibbling between bites.

  • Spooky Punch: A refreshing, brightly colored drink, this punch brings a touch of fun while complementing the visual theme of your cake jars.

  • Cinnamon Sugar Donuts: Soft and sweet donuts coated in cinnamon provide a spiced flavor that pairs beautifully with chocolatey treats.

  • Ghostly Meringues: Light and airy, these sweet meringue cookies can be whimsically decorated to add a festive touch to your dessert table.

  • Apple Cider Floats: Combining apple cider with a scoop of vanilla ice cream, this float is a creamy, refreshing treat that contrasts the richness of your cake jars.

Let your creativity shine and enjoy these complementary delights that will enchant your guests just as much as the Witches' Brew Halloween Cake Jars!

Tips for the Best Witches' Brew Halloween Cake Jars

Maintain Room Temperature: Ensure your butter and eggs are at room temperature to help them blend smoothly, resulting in a light and fluffy cake.

Don't Overmix: While combining dry and wet ingredients, mix just until combined to prevent a dense cake. Overmixing can lead to tough textures in your Witches' Brew Halloween Cake Jars.

Cool Completely: Allow your cake to cool completely before cutting and assembling. Warm cake can melt your buttercream, making it messy to pipe and layer.

Layering Strategy: When layering the jars, alternate cake and buttercream to achieve visually striking stripes. This layering also adds a delightful texture contrast!

Decorate Creatively: Feel free to get playful with decorations! Use different sprinkle colors or fondant shapes to personalize your Witches' Brew Halloween Cake Jars for extra festive flair.

Witches' Brew Halloween Cake Jars

Witches' Brew Halloween Cake Jars Recipe FAQs

What type of cocoa powder should I use for this recipe?
Absolutely! For the Witches' Brew Halloween Cake Jars, using unsweetened black cocoa powder is key. It provides a rich, deep chocolate flavor and a darker color that enhances the spooky theme. If you can’t find black cocoa, you can substitute it with regular unsweetened cocoa powder, but keep in mind it might alter the color slightly.

How should I store the cake jars once assembled?
Very good question! Store your assembled Witches' Brew Halloween Cake Jars in the refrigerator for up to 3 days. Make sure to cover each jar with plastic wrap or place them in an airtight container to help keep them fresh and moist. If you feel they might get soggy, consider assembling them just a few hours before serving.

Can I freeze these cake jars for later enjoyment?
Absolutely! To freeze your Witches' Brew Halloween Cake Jars, wrap each jar tightly in plastic wrap and then cover it with aluminum foil to prevent freezer burn. They can be frozen for up to a month. When you're ready to enjoy them, simply thaw in the refrigerator overnight and warm them in the microwave for about 15-20 seconds if you prefer them warm!

What should I do if the cake is too dense?
If you find your cake ends up too dense, it may be due to overmixing the batter or not incorporating enough air during the creaming process. Make sure when creaming the butter and sugar, you’re beating just until light and fluffy. Also, be sure not to overmix after adding the dry ingredients; mixing just until combined keeps it airy and delightful!

Are there any dietary considerations for the Witches' Brew Halloween Cake Jars?
Great thought! This recipe contains gluten and dairy, so those with allergies or intolerances should consider gluten-free flour blends and dairy alternatives. For a vegan version, substitute the eggs with flax eggs or unsweetened applesauce and use plant-based butter for both the cake and buttercream. Always double-check that your fondant and decorations are suitable for your guests’ dietary needs!

What is the best way to adjust the sweetness of the buttercream?
If you find your buttercream is too sweet for your liking, consider adding a pinch of salt to balance the sweetness or a splash of lemon juice for a touch of acidity. You may also want to reduce the powdered sugar slightly, but remember it may affect the texture and firmness of your icing. To achieve the perfect balance, adjust a little at a time and taste as you go!

Witches' Brew Halloween Cake Jars

Witches' Brew Halloween Cake Jars for Spooktacular Treats

Delight in Witches' Brew Halloween Cake Jars, a visually enchanting dessert that combines rich chocolate cake with vibrant buttercream for a perfect Halloween treat.
Print Recipe Pin Recipe
Prep Time 30 minutes mins
Cook Time 50 minutes mins
Cooling Time 15 minutes mins
Total Time 1 hour hr 35 minutes mins
Course Desserts
Cuisine Halloween
Servings 18 jars
Calories 350 kcal

Equipment

  • 9-inch square cake tin
  • mixing bowl
  • Electric Mixer
  • whisk
  • spatula
  • Serrated knife
  • round cutter
  • wooden skewer

Ingredients
  

For the Cake

  • 330 g self-raising flour base of the cake, lending a delightful fluffiness
  • 360 g granulated sugar balances the chocolate flavor perfectly
  • 360 g butter rich, creamy to ensure moisture
  • 6 pcs eggs provides structure and richness
  • 30 g unsweetened black cocoa powder adds deep chocolate flavor and spooky color
  • 1.5 teaspoon baking powder helps the cake rise
  • 0.5 teaspoon salt enhances all the flavors
  • 90 ml milk adds moisture
  • 2 teaspoon vanilla extract for warm, familiar flavor

For the Buttercream

  • 400 g salted butter base for buttercream, balances sweetness
  • 800 g powdered sugar creates sweet, fluffy texture
  • 1.25 teaspoon vanilla extract infuses buttercream with creamy flavor
  • 2 tablespoon milk or cream optional for consistency adjustment
  • 1 drops electric green food coloring turns buttercream spooky

For the Decorations

  • 250 g orange fondant for festive decorations
  • 200 g black fondant adds festive flair
  • 1 tablespoon CMC powder stabilizes fondant
  • Sprinkles adds texture and festivity

Instructions
 

Cake Preparation

  • Preheat your oven to 170 degrees Celsius and prepare a 9-inch square cake tin by greasing and flouring it.
  • Cream together 360 g of butter and 360 g of granulated sugar until light and fluffy, about 2 minutes.
  • Incorporate 6 eggs into the creamed mixture two at a time, beating well after each addition.
  • In another bowl, whisk together 330 g of self-raising flour, 30 g of black cocoa powder, 1.5 teaspoons of baking powder, and 0.5 teaspoon of salt. Sift this into the butter mixture in three batches, alternating with 90 ml of milk, and mix in 2 teaspoons of vanilla extract.
  • Pour batter into the prepared cake tin and bake for 45 to 50 minutes, then cool in the tin for 2 to 3 minutes before transferring to a wire rack.
  • Cream 400 g of salted butter until smooth, then gradually add 800 g of powdered sugar. Mix in 1.25 teaspoons of vanilla extract and 2 tablespoons of milk or cream if needed. Add electric green food coloring to achieve desired hue.
  • Level the cooled cake using a serrated knife and cut into 18 circles using a round cutter.
  • Assemble the jars by adding a layer of sprinkles, a cake circle, and a layer of green buttercream; repeat with another cake circle and buttercream.
  • For decoration, poke holes with a wooden skewer and insert fondant witch legs, finishing with sprinkles on top.

Notes

Ensure ingredients like butter and eggs are at room temperature for best results. Cool the cake completely before assembling.

Nutrition

Serving: 1jarCalories: 350kcalCarbohydrates: 45gProtein: 3gFat: 18gSaturated Fat: 11gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gTrans Fat: 0.5gCholesterol: 90mgSodium: 150mgPotassium: 100mgFiber: 1gSugar: 25gVitamin A: 500IUCalcium: 30mgIron: 1mg
Keyword buttercream, cake jars, chocolate cake, Halloween Desserts, spooky treats, Witches' Brew Halloween Cake Jars
Tried this recipe?Let us know how it was!

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About Sierra Lane

Season-obsessed cook sharing quick, produce-packed recipes for everyday meals—straight from my farmers’ market basket to your table.

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