
There’s something incredibly nostalgic about baking a cake that brings back sweet memories. Whether it’s a birthday celebration, a family gathering, or just an afternoon treat, this Reese’s Earthquake Cake is sure to bring smiles all around. With its rich chocolate flavor and creamy peanut butter swirls, this cake is not only easy to whip up but also a showstopper that will have everyone asking for seconds. It’s the kind of recipe you’ll want to make again and again!
Why You’ll Love Reese’s Earthquake Cake 🍫
- Fast
- Easy
- Giftable
- Crowd-pleasing
Ingredients
Before we dive into the baking, let’s gather our ingredients. Here’s what you will need:
- 1 package chocolate cake mix: The base for our delicious cake.
- 1 cup creamy peanut butter: The star ingredient that adds a rich, nutty flavor.
- 1 cup powdered sugar: For that sweet, creamy peanut butter filling.
- 1 cup semi-sweet chocolate chips: Because more chocolate is always a good idea!
- 1 cup chopped Reese’s Peanut Butter Cups: These little treasures will make each bite a delight.
- 3 large eggs: To bind everything together.
- 1/2 cup vegetable oil: For moisture and richness.
- 1 cup water: To help bring the batter together.
- 1 teaspoon vanilla extract: The secret ingredient that enhances all the flavors.
How to Make Reese’s Earthquake Cake 🍫
Now that we have everything ready, let’s get baking!
- Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking dish to prevent sticking.
- In a large mixing bowl, combine the chocolate cake mix, eggs, vegetable oil, water, and vanilla extract. Mix until everything is well combined and smooth.
- Pour half of the cake batter into the prepared baking dish, spreading it out evenly.
- In a separate bowl, mix the creamy peanut butter and powdered sugar until smooth. Drop spoonfuls of this scrumptious mixture over the cake batter.
- Add the remaining cake batter on top of the peanut butter mixture, making sure it covers it well.
- Next, sprinkle the semi-sweet chocolate chips and chopped Reese’s Peanut Butter Cups evenly over the top. Trust me, this is where the magic happens!
- Using a spatula or knife, gently swirl the peanut butter mixture into the cake batter. This will create those delightful pockets of peanut butter goodness.
- Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted in the center comes out clean. Your kitchen will smell amazing!
- Allow the cake to cool in the pan for about 10 minutes, then transfer it to a wire rack to cool completely before serving. Patience is key here!
Substitutions & Additions
If you want to mix things up a bit, here are some fun substitutions and additions you can try:
- Swap out the chocolate cake mix for a vanilla or red velvet cake mix for a different flavor profile.
- Add some crushed nuts for extra crunch and texture.
- Consider drizzling some melted chocolate or caramel sauce on top before serving for an extra indulgent touch.
Tips for Success
To ensure your Reese’s Earthquake Cake turns out perfectly, keep these tips in mind:
- Don’t overmix the batter; just mix until combined for a lighter cake.
- Let the cake cool completely before cutting to prevent it from falling apart.
- You can prepare the cake batter a day in advance and keep it in the fridge until you’re ready to bake.
How to Store Reese’s Earthquake Cake 🍫
Once your cake is baked and cooled, it’s important to store it properly to keep it fresh:
- Store any leftovers in an airtight container at room temperature for up to 3 days.
- If you want to keep it longer, you can refrigerate it for up to a week.
- For longer storage, you can freeze the cake for up to 3 months. Just make sure to wrap it well!
FAQs
Can I use a different type of nut butter?
Absolutely! Almond butter or cashew butter would work well too.
Can I bake this in a different pan?
Yes, you can use a round cake pan or even a muffin tin; just adjust the baking time accordingly.
Is this recipe suitable for gluten-free diets?
Yes! Just use a gluten-free chocolate cake mix.
With its irresistible combination of flavors and textures, Reese’s Earthquake Cake is bound to become a favorite in your home. For more delicious recipes, check out the Twix Cookie Cups or Self-Saucing Butterscotch Pudding for treats you will love!
Don’t forget to follow us on Pinterest for more mouthwatering recipes and baking inspiration!

Reese’s Earthquake Cake
Ingredients
Equipment
Method
- Step 1: Preheat your oven to 350°F (175°C). Grease and flour a 9x13-inch baking dish to prevent sticking.
- Step 2: In a large mixing bowl, combine the chocolate cake mix, eggs, vegetable oil, water, and vanilla extract. Mix until everything is well combined and smooth.
- Step 3: Pour half of the cake batter into the prepared baking dish, spreading it out evenly.
- Step 4: In a separate bowl, mix the creamy peanut butter and powdered sugar until smooth. Drop spoonfuls of this scrumptious mixture over the cake batter.
- Step 5: Add the remaining cake batter on top of the peanut butter mixture, making sure it covers it well.
- Step 6: Sprinkle the semi-sweet chocolate chips and chopped Reese’s Peanut Butter Cups evenly over the top.
- Step 7: Using a spatula or knife, gently swirl the peanut butter mixture into the cake batter.
- Step 8: Bake in the preheated oven for 30-35 minutes, or until a toothpick inserted in the center comes out clean.
- Step 9: Allow the cake to cool in the pan for about 10 minutes, then transfer it to a wire rack to cool completely before serving.





