The holiday season is all about indulging in sweets that bring joy and warmth, and my Chaos Cake Peppermint Cookie Brittle perfectly captures that festive spirit! Combining rich chocolate cake with a refreshing peppermint twist and crunchy cookie bits, this delightful dessert is a showstopper that you can whip up in under an hour. It’s an effortless crowd-pleaser, making it the ideal treat for busy gatherings or cozy nights by the fire. Not only is it vegetarian-friendly, but it also allows you to ditch the fast food and embrace a homemade tradition that’s sure to impress your loved ones. Curious about how this festive creation comes together? Let’s dive into the recipe!

Why is Chaos Cake a Crowd-Pleaser?
Quick and Easy: This recipe comes together in under an hour, making it perfect for those last-minute holiday gatherings!
Festive Flavors: The delightful marriage of rich chocolate and refreshing peppermint creates a seasonal sensation sure to impress.
Versatile Toppings: Feel free to swap in your favorite cookies or drizzles – just like my Peppermint Kiss Chocolate for a twist!
Vegetarian-Friendly: With no meat products, this dessert meets vegetarian diets while satisfying sweet cravings.
Perfect for Sharing: Whether it’s a holiday party or cozy family dessert, everyone will want a piece of this delightful treat!
Chaos Cake Peppermint Cookie Brittle Ingredients
For the Cake
• All-Purpose Flour – Provides structure and body to the cake; substitute with gluten-free flour for a gluten-free version.
• Granulated Sugar – Adds sweetness and moisture; can be replaced with coconut sugar for a lower glycemic option.
• Cocoa Powder – Contributes rich chocolate flavor; use unsweetened dark cocoa to amplify the richness.
• Baking Powder – Acts as a leavening agent; ensure it’s fresh for optimal results.
• Baking Soda – Works alongside baking powder to achieve the perfect texture.
• Salt – Enhances all flavors; don’t skip it for balance!
• Whole Milk – Adds moisture and richness; swap for almond or oat milk for a nondairy option.
• Vegetable Oil – Keeps the cake moist; melted coconut oil makes a healthier substitute.
• Egg – Binds ingredients together; for a vegan option, try a flax egg (1 tablespoon ground flaxseed + 2.5 tablespoons water).
• Vanilla Extract – Provides depth of flavor; almond extract adds an interesting twist.
• Hot Water – Helps dissolve cocoa powder, leading to a smoother batter.
For the Toppings
• Chocolate Sandwich Cookies – Adds a crunchy and flavorful layer; Oreos or your homemade cookies work beautifully.
• Peppermint Extract – Infuses the cake with refreshing mint flavor; adjust according to your taste preference.
• Granulated Sugar (for Brittle) – Creates that signature brittle texture; remember not to stir once melted to avoid crystallization.
• Chopped Roasted Almonds – Optional topping for extra crunch; can replace with pecans or walnuts.
• Crushed Peppermint Candies – Enhances the peppermint flavor and adds visual flair.
Dive into making your Chaos Cake Peppermint Cookie Brittle—a festive delight that’s sure to wow friends and family alike!
Step‑by‑Step Instructions for Chaos Cake Peppermint Cookie Brittle
Step 1: Preheat and Prepare
Begin by preheating your oven to 350°F (175°C). While it warms up, line an 8-inch square baking pan with parchment paper, letting the edges hang over for easy removal later. This step is crucial to ensure your Chaos Cake Peppermint Cookie Brittle comes out perfectly without sticking.
Step 2: Mix Dry Ingredients
In a large mixing bowl, whisk together 1 cup of all-purpose flour, 1 cup of granulated sugar, ½ cup of cocoa powder, 1 teaspoon of baking powder, ½ teaspoon of baking soda, and ½ teaspoon of salt. This mixture will create the rich foundation of your cake, combining the flavors well and ensuring an even rise during baking.
Step 3: Combine Wet Ingredients
In another bowl, mix together 1 cup of whole milk, ⅓ cup of vegetable oil, 1 large egg, and 1 teaspoon of vanilla extract. Whisk until well combined, then gradually pour this wet mixture into the dry ingredients while stirring. Finally, add ½ cup of hot water, mixing until you have a smooth, delicate batter that will be the heart of your Chaos Cake Peppermint Cookie Brittle.
Step 4: Bake the Cake
Pour the batter into your prepared baking pan, ensuring it spreads evenly. Place it in the preheated oven and bake for 20-22 minutes or until a toothpick inserted in the center comes out clean. The cake should have slightly pulled away from the edges and appear domed and firm when it’s done baking.
Step 5: Cool the Cake
Once your Chaos Cake has finished baking, remove it from the oven and let it cool completely in the pan for about 30 minutes. This step is essential, as adding toppings to a warm cake may cause melting and sogginess, leaving you with an uneven texture when it’s time to serve.
Step 6: Add Toppings
After cooling, gently sprinkle a layer of crushed chocolate sandwich cookies over the top of the cake. Drizzle 1 teaspoon of peppermint extract evenly, allowing the flavor to infuse into the cake. Press the cookies down lightly into the surface to secure them in place, creating added texture and flavor.
Step 7: Make the Brittle
In a medium saucepan, combine 1 cup of granulated sugar and 1/4 cup of water. Cook over medium heat without stirring until the mixture dissolves and turns a rich amber color, approximately 8-10 minutes. Keep a close eye on it to prevent burning, as you’re creating a sweet brittle that will add a delightful crunch to your Chaos Cake Peppermint Cookie Brittle.
Step 8: Drizzle Chocolate
Once the brittle is ready, remove it from the heat. While it’s cooling slightly, melt your desired chocolate in the microwave in 15-second intervals, stirring until smooth. Drizzle this luscious melted chocolate over the cookie layer to create a beautiful, glossy finish on your cake, enticing anyone who sees it.
Step 9: Finish with Brittle and Candies
Quickly pour the amber sugar mixture over the chocolate layer, spreading it evenly if needed. Immediately sprinkle crushed peppermint candies on top for a festive touch. Place the assembled cake in the refrigerator for 15 minutes to allow the brittle to set and solidify, enhancing the final texture.
Step 10: Slice and Serve
Once set, remove the cake from the refrigerator and lift it out of the pan using the parchment paper overhang. Slice it into squares and serve chilled to your guests. The contrast of the soft cake, smooth chocolate, and crunchy peppermints in your Chaos Cake Peppermint Cookie Brittle will surely impress everyone!

What to Serve with Chaos Cake Peppermint Cookie Brittle
Looking to complement the festive vibes of your delightful cake? Here are some delicious pairing ideas that will elevate your dessert experience.
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Creamy Hot Cocoa: Rich and chocolatey, this drink enhances the chocolate flavors of the cake while the warmth balances the refreshing peppermint notes.
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Whipped Cream Topping: Light and airy, a dollop of freshly whipped cream adds a luscious texture on top, making each bite even more indulgent.
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Chocolate-Mint Ice Cream: For a cool contrast, this dessert echoes the chocolate and peppermint theme, creating a delightful harmony of flavors.
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Nutty Coffee: A cup of coffee with notes of hazelnut or almond offers a warm, toasty complement that offsets the sweetness of the cake beautifully.
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Citrusy Fruit Salad: Fresh fruits like oranges and berries provide a refreshing burst of flavor, cleansing the palate between bites of rich cake.
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Spiced Cider: Warm spiced cider adds cozy autumnal notes, enhancing the festive spirit while providing a deliciously sweet sip alongside the dessert.
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Peppermint Bark: For a double dose of mint, pairing with peppermint bark adds a crunchy texture and continues the flavor theme perfectly.
These pairings will surely make your Chaos Cake Peppermint Cookie Brittle a memorable centerpiece for any gathering!
Expert Tips for Chaos Cake Peppermint Cookie Brittle
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Cool Completely: Allow the cake to cool fully before adding toppings to prevent melting and ensure a perfect layer of crunch on top.
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Sugar Watching: Monitor the sugar closely while making the brittle; overcooking can lead to a bitter taste that detracts from the sweetness of your Chaos Cake Peppermint Cookie Brittle.
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Firm Texture Check: Use a toothpick to check the doneness of your cake. It should come out clean; this step ensures a delightful texture rather than a gooey center.
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Mixing Precision: When combining wet and dry ingredients, mix just until combined to avoid overworking the batter, which can yield a tough cake.
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Substitution Awareness: Keep in mind that alternative ingredients like vegan substitutes may alter the cake’s texture; always test recipes with new ingredients for best results.
How to Store and Freeze Chaos Cake Peppermint Cookie Brittle
Fridge: Store your Chaos Cake Peppermint Cookie Brittle in an airtight container for up to 3 days to maintain its freshness and crunch.
Freezer: For longer storage, freeze wrapped slices in plastic wrap followed by aluminum foil for up to 2 months. Thaw by leaving at room temperature or refrigerating overnight before serving.
Reheating: If desired, you can gently warm slices in the microwave for about 10-15 seconds; this restores some softness to the cake while keeping the topping intact.
Make-Ahead: This dessert can be made a day ahead of time, just remember to refrigerate it wrapped or in an airtight container to enjoy its vibrant flavors at your holiday gathering!
Make Ahead Options
Busy home cooks, rejoice! You can easily prepare the delicious Chaos Cake Peppermint Cookie Brittle up to 24 hours in advance, making it perfect for holiday meal prep. To get started, bake the cake and allow it to cool completely before adding the toppings—this prevents sogginess. Once cooled, cover the cake with crushed chocolate sandwich cookies, peppermint extract, and refrigerate it until you’re ready to finish. For the brittle, you can create and store it in an airtight container for up to 3 days. When it’s time to serve, simply drizzle the prepared melted chocolate, top with brittle, and crushed peppermint candies. Enjoy a festive treat that’s just as delightful as if made fresh!
Chaos Cake Peppermint Cookie Brittle Variations
Get ready to make this festive treat your own with these fun and unique twists!
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Gluten-Free: Swap all-purpose flour for a gluten-free blend for delicious allergen-free indulgence. Your friends will never know the difference!
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Coconut Sugar: Replace granulated sugar with coconut sugar for a lower glycemic option that adds depth. It brings a subtle caramel flavor to your cake, enriching each bite.
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Switch-Up the Chocolate: Experiment with white or dark chocolate drizzle for a varied taste and presentation. Each type will speak its own language of sweetness and allure.
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Flavored Cookies: Change out chocolate sandwich cookies for flavors like mint or peanut butter for a delightful surprise. This small swap can take your cake on a flavor adventure!
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Nut-Free Delight: For a nut-free experience, either skip the nuts or use sunflower seeds for crunch without allergens. This keeps the treat accessible for all your guests.
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Enhanced Peppermint: Infuse an extra layer of peppermint by using crushed peppermint patties along with candies. It intensifies that holiday flavor in every bite.
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Make it Vegan: Substitute the egg with a flax egg (1 tablespoon ground flaxseed + 2.5 tablespoons water) to create a delectable vegan version – perfect for plant-based celebrations!
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Add Fresh Fruit: Incorporate elements like raspberries or strawberries for a fruity burst. They will add a pop of color and a refreshing contrast to the richness of the cake.
Feel free to mix and match these creative variations as you enhance your Chaos Cake Peppermint Cookie Brittle experience! And if you’re also in the mood for more delightful desserts, check out my Strawberry Earthquake Cake and tasty Christmas Cookies Butterscotch for even more sweetness in your kitchen!

Chaos Cake Peppermint Cookie Brittle Recipe FAQs
What type of chocolate should I use for the cake?
Absolutely! For a rich and indulgent flavor, I recommend using unsweetened dark cocoa powder. It provides a deeper chocolate taste compared to regular cocoa, making your Chaos Cake Peppermint Cookie Brittle even more delightful.
How can I store leftover Chaos Cake Peppermint Cookie Brittle?
Very simply! You can store your leftover Chaos Cake Peppermint Cookie Brittle in an airtight container in the refrigerator for up to 3 days. This will help maintain its freshness and crunchy texture, so you can enjoy it longer!
Can I freeze Chaos Cake Peppermint Cookie Brittle?
Yes, you can! To freeze, wrap your sliced Chaos Cake Peppermint Cookie Brittle tightly in plastic wrap and then in aluminum foil. It will keep well in the freezer for up to 2 months. When you’re ready to enjoy it, simply thaw at room temperature or refrigerate overnight.
Why does my brittle sometimes turn out sticky or chewy?
Great question! The sugar can crystallize if stirred while melting or if cooked at too low a temperature. To prevent this, avoid stirring the sugar once it’s melted, and ensure it reaches a rich amber color before removing it from the heat. A perfect brittle adds that delightful crunch to your cake!
Is this recipe suitable for vegetarians?
Absolutely! The Chaos Cake Peppermint Cookie Brittle contains no meat or animal-based ingredients (excluding dairy and eggs), making it suitable for vegetarians. For those following a vegan diet, simply substitute the egg with a flax egg (1 tablespoon ground flaxseed mixed with 2.5 tablespoons of water) and use plant-based milk.
What can I substitute for the chocolate sandwich cookies?
Feel free to get adventurous! You can swap chocolate sandwich cookies with any of your favorite cookie varieties, such as vanilla cream-filled cookies or even homemade ones. Each option offers a unique twist to your Chaos Cake Peppermint Cookie Brittle, ensuring every bite is still deliciously satisfying!

Chaos Cake Peppermint Cookie Brittle for Festive Joy
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and line an 8-inch square baking pan with parchment paper.
- In a large mixing bowl, whisk together all-purpose flour, granulated sugar, cocoa powder, baking powder, baking soda, and salt.
- In another bowl, mix together whole milk, vegetable oil, egg, and vanilla extract. Gradually pour this mixture into the dry ingredients, mixing well, then add hot water until smooth.
- Pour the batter into the prepared baking pan and bake for 20-22 minutes or until a toothpick comes out clean.
- Cool the cake completely in the pan for about 30 minutes.
- Sprinkle chocolate sandwich cookies over the top and drizzle peppermint extract evenly.
- In a saucepan, combine granulated sugar and water. Cook over medium heat until it turns amber.
- Remove from heat and drizzle melted chocolate over the cookie layer.
- Pour the brittle mixture over the chocolate layer and sprinkle crushed peppermint candies.
- Refrigerate for 15 minutes, then slice and serve.

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