A Reese’s Peanut Butter Earthquake Cake is a chocolate lover’s dream! This dessert combines rich chocolate cake with a creamy peanut butter center, creating a delightful explosion of flavors. Perfect for birthdays, celebrations, or a cozy family gathering, this cake is not only indulgent but also simple to make. Its gooey texture and sweet toppings make it a standout dessert that everyone will adore.
Why You’ll Love This Recipe
- Decadent Flavor: The combination of chocolate and peanut butter creates a rich taste that satisfies your sweet tooth.
- Easy to Prepare: With minimal steps and simple ingredients, you can whip up this cake in no time.
- Versatile Occasions: Ideal for parties, potlucks, or just a weekend treat; this cake fits any event perfectly.
- Gooey Texture: The layered center adds a delightful gooeyness that makes each bite irresistible.
- Crowd-Pleaser: Serve it warm or at room temperature—everyone loves this indulgent dessert!
Tools and Preparation
Before diving into the recipe, gather your tools to ensure a smooth baking experience. Having the right equipment makes all the difference.
Essential Tools and Equipment
- 9×13-inch baking dish
- Mixing bowls
- Electric mixer or whisk
- Measuring cups and spoons
- Spatula
- Knife
Importance of Each Tool
- 9×13-inch baking dish: Perfect size for even baking and easy serving.
- Electric mixer or whisk: Ensures smooth mixing of batter and peanut butter mixture without lumps.
- Spatula: Great for spreading batter evenly and swirling ingredients together.

Ingredients
Creating the Reese’s Peanut Butter Earthquake Cake requires just a few key ingredients:
For the Cake Base
- 1 box chocolate cake mix
- 1 cup water
- 1/2 cup vegetable oil
- 3 large eggs
For the Peanut Butter Layer
- 1 cup creamy peanut butter
- 8 oz cream cheese, softened
- 1/2 cup unsalted butter, melted
- 4 cups powdered sugar
- 1 tsp vanilla extract
For Topping
- 1 cup Reese’s Peanut Butter Cups, chopped
How to Make Reese’s Peanut Butter Earthquake Cake
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C). Grease your 9×13-inch baking dish to prevent sticking.
Step 2: Prepare the Cake Batter
In a large bowl, mix together the chocolate cake mix, water, vegetable oil, and eggs until fully combined. Pour the batter into the greased baking dish.
Step 3: Make the Peanut Butter Mixture
In another bowl, combine the creamy peanut butter, softened cream cheese, melted butter, powdered sugar, and vanilla extract. Mix until smooth and creamy.
Step 4: Combine Layers
Drop spoonfuls of the peanut butter mixture over the cake batter. Use a knife to swirl the peanut butter mixture gently into the batter for a marbled effect.
Step 5: Add Toppings
Sprinkle chopped Reese’s Peanut Butter Cups evenly over the top of the cake mixture.
Step 6: Bake
Bake in your preheated oven for about 35-40 minutes. Check if it’s done by inserting a toothpick into the center; it should come out mostly clean.
Step 7: Cool and Serve
Allow the cake to cool slightly before serving. Enjoy it warm or at room temperature for an ultimate treat!
How to Serve Reese’s Peanut Butter Earthquake Cake
Serving Reese’s Peanut Butter Earthquake Cake is all about enhancing its rich flavors and textures. This cake can be enjoyed in various ways, making it a versatile dessert for any occasion.
A La Mode
- Serve warm slices of the cake with a scoop of vanilla ice cream on top. The cold ice cream pairs beautifully with the warm, gooey center.
With Whipped Topping
- Top each slice with dollops of whipped topping. This adds a light and airy contrast to the dense cake.
Drizzled with Chocolate Sauce
- Drizzle chocolate sauce over the cake just before serving. This extra layer of chocolate elevates the indulgence.
Fresh Berries on the Side
- Serve with a side of fresh berries like strawberries or raspberries. Their tartness balances the sweetness of the cake.
Coffee Pairing
- Consider pairing slices with a cup of brewed coffee or espresso. The bitterness complements the sweet and nutty flavors of the cake.
How to Perfect Reese’s Peanut Butter Earthquake Cake
To ensure your Reese’s Peanut Butter Earthquake Cake turns out perfect every time, keep these tips in mind:
- Measure Ingredients Accurately: Use measuring cups and spoons to ensure you add the right amounts for optimal texture and flavor.
- Room Temperature Ingredients: Allow eggs and cream cheese to reach room temperature before mixing. This helps create a smoother batter.
- Swirl Gently: When swirling the peanut butter mixture into the batter, do so gently to maintain distinct layers without overmixing.
- Check for Doneness: Use a toothpick inserted in the center; it should come out mostly clean. This ensures your cake is cooked perfectly.
- Cool Before Serving: Let it cool slightly after baking for easier slicing and serving. Warm slices provide a delightful experience but should not be too hot.
- Store Properly: If there are leftovers, store them in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.
Best Side Dishes for Reese’s Peanut Butter Earthquake Cake
Pairing side dishes with your Reese’s Peanut Butter Earthquake Cake can elevate your dessert experience. Here are some delicious options:
-
Vanilla Ice Cream
Classic choice that complements chocolate flavors beautifully. -
Fresh Fruit Salad
A mix of seasonal fruits adds brightness and freshness that contrasts well with the cake’s richness. -
Chocolate Pudding
Creamy chocolate pudding offers an additional layer of decadence that chocolate lovers will adore. -
Peanut Butter Cookies
Enhance the peanut butter flavor profile by serving alongside soft peanut butter cookies. -
Caramel Sauce
A drizzle of caramel sauce can add sweetness and complexity to every bite. -
Nutty Granola Parfait
Layer yogurt, granola, and fresh fruit in glasses for a crunchy, creamy side that balances the dessert’s richness. -
Chilled Milkshake
A creamy milkshake can be refreshing while complementing the flavors of the cake perfectly. -
Coffee or Tea
A warm beverage can enhance your dessert experience, especially after a rich slice of cake.
Common Mistakes to Avoid
When making Reese’s Peanut Butter Earthquake Cake, it’s easy to overlook some key steps. Here are common mistakes to avoid for the best results.
- Skipping the ingredient prep: Make sure all ingredients are at room temperature before mixing. This helps achieve a smoother batter and better overall texture.
- Overmixing the batter: Mix only until combined. Overmixing can lead to a dense cake instead of the light, fluffy texture you want.
- Ignoring baking times: Every oven is different. Check your cake a few minutes before the stated baking time to ensure it doesn’t overbake.
- Not swirling properly: When adding the peanut butter mixture, use a gentle hand while swirling to create marbled effects without fully blending it into the batter.
- Using incorrect pan size: Ensure that you’re using a 9×13-inch baking dish as specified. A different size can affect bake time and cake texture.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftover cake in an airtight container for up to 5 days.
- Keep it covered with plastic wrap or foil to maintain moisture.
Freezing Reese’s Peanut Butter Earthquake Cake
- Wrap individual slices tightly in plastic wrap, then place them in a freezer-safe container.
- The cake can be frozen for up to 3 months.
Reheating Reese’s Peanut Butter Earthquake Cake
- Oven: Preheat your oven to 350°F (175°C). Place slices on a baking sheet and warm for about 10-15 minutes.
- Microwave: Heat individual slices on medium power for 20-30 seconds until warm.
- Stovetop: Use a skillet over low heat. Cover and heat slices for about 5 minutes or until warmed through.
Frequently Asked Questions
Here are some frequently asked questions about making Reese’s Peanut Butter Earthquake Cake.
Can I substitute the chocolate cake mix?
Yes! You can use any chocolate cake mix or even make your own from scratch if you prefer.
What can I use instead of cream cheese?
You can substitute with vegan cream cheese or even Greek yogurt for a lighter option.
How do I know when my Reese’s Peanut Butter Earthquake Cake is done?
A toothpick inserted into the center should come out mostly clean, indicating it’s cooked through but still moist.
Can I customize the toppings?
Absolutely! Feel free to add nuts, different types of candy bars, or even drizzle with chocolate sauce for extra indulgence.
Final Thoughts
Reese’s Peanut Butter Earthquake Cake is not only rich and decadent but also versatile. You can easily customize it by adding your favorite mix-ins or toppings. Whether you are serving it at a gathering or enjoying it after dinner, this dessert is sure to impress everyone at the table. Don’t hesitate to try this delightful recipe!
Reese’s Peanut Butter Earthquake Cake
- Total Time: 1 hour
- Yield: Approximately 12 servings 1x
Description
Indulge in the delightful Reese’s Peanut Butter Earthquake Cake, a chocolate lover’s paradise that delivers an explosion of flavors in every bite. This irresistibly gooey dessert features a rich chocolate cake with a creamy peanut butter center, making it perfect for any occasion—from birthdays to cozy family gatherings. With its easy preparation and minimal ingredients, this decadent treat is sure to be a crowd-pleaser. Serve it warm or at room temperature, and watch as everyone goes back for seconds!
Ingredients
- 1 box chocolate cake mix
- 1 cup water
- 1/2 cup vegetable oil
- 3 large eggs
- 1 cup creamy peanut butter
- 8 oz cream cheese, softened
- 1/2 cup unsalted butter, melted
- 4 cups powdered sugar
- 1 tsp vanilla extract
- 1 cup chopped Reese's Peanut Butter Cups
Instructions
- Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.
- In a large bowl, combine the chocolate cake mix, water, vegetable oil, and eggs until well blended. Pour into the prepared baking dish.
- In another bowl, mix creamy peanut butter, softened cream cheese, melted butter, powdered sugar, and vanilla until smooth.
- Drop spoonfuls of the peanut butter mixture over the cake batter and gently swirl with a knife.
- Sprinkle chopped Reese's Peanut Butter Cups on top.
- Bake for 35-40 minutes or until a toothpick inserted comes out mostly clean.
- Allow to cool slightly before serving.
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice (about 100g)
- Calories: 385
- Sugar: 36g
- Sodium: 320mg
- Fat: 22g
- Saturated Fat: 8g
- Unsaturated Fat: 13g
- Trans Fat: 0g
- Carbohydrates: 43g
- Fiber: 2g
- Protein: 6g
- Cholesterol: 50mg
Keywords: For variations, try adding nuts or your favorite candy bars as toppings. Ensure all ingredients are at room temperature for best results.




