Description

Reese’s Peanut Butter Earthquake Cake is a rich, decadent dessert that combines moist chocolate cake with creamy peanut butter, chunks of Reese’s Peanut Butter Cups, and a luscious cream cheese swirl. As the cake bakes, the creamy filling sinks and cracks through the chocolate cake, creating the signature “earthquake” appearance. Every bite is packed with gooey chocolate, creamy peanut butter, and melted candy, making it perfect for birthdays, potlucks, holidays, or whenever you’re craving an indulgent dessert.

Prep Time

• Prep Time: 20 minutes
• Cook Time: 45–50 minutes
• Cooling Time: 30 minutes
• Total Time: About 1 hour 40 minutes

Servings

• Serves: 12–15 slices

Ingredients

For the Cake

• 1 box (15.25 oz / 432 g) chocolate cake mix
• Ingredients required on the cake mix (typically eggs, oil, and water)

Peanut Butter Cream Cheese Filling

• 8 oz (226 g) cream cheese, softened
• ½ cup creamy peanut butter
• ½ cup unsalted butter, melted
• 3½ cups powdered sugar
• 1 teaspoon vanilla extract

Mix-ins

• 1½ cups chopped Reese’s Peanut Butter Cups
• 1 cup semi-sweet chocolate chips
• ½ cup peanut butter chips (optional)
• ½ cup chopped roasted peanuts (optional)

Optional Topping

• Melted peanut butter
• Chocolate syrup
• Whipped cream
• Extra chopped Reese’s Peanut Butter Cups
• Mini chocolate chips

Instructions

Step 1: Prepare

• Preheat oven to 350°F (175°C).
• Grease a 9×13-inch baking dish.

Step 2: Make Cake Batter

Prepare the chocolate cake batter according to the package instructions.

Pour evenly into the prepared baking pan.

Step 3: Make Filling

In a large bowl, beat:

• Cream cheese
• Peanut butter
• Melted butter
• Vanilla

Gradually mix in powdered sugar until smooth and creamy.

Step 4: Assemble

Drop spoonfuls of the peanut butter cream cheese mixture all over the cake batter.

Do not spread completely.

Sprinkle over:

• Reese’s Peanut Butter Cups
• Chocolate chips
• Peanut butter chips
• Peanuts (optional)

Step 5: Bake

Bake for 45–50 minutes.

The center should still look slightly gooey while the edges are set.

Do not overbake.

Step 6: Cool

Allow the cake to cool for at least 30 minutes before slicing.

Top with chocolate drizzle and melted peanut butter if desired.

Recipe Notes

• The cracks and uneven surface are normal.
• Use room-temperature cream cheese for a smoother filling.
• Mini Reese’s work especially well because they distribute evenly.
• The center remains soft after baking.
• Refrigerate leftovers for cleaner slices.

Tips for Success

• Don’t overmix the cream cheese filling.
• Avoid swirling too much; large pockets create the classic earthquake look.
• Line the pan with parchment for easier removal.
• Chill for 1 hour before cutting for neater squares.
• Warm slices in the microwave for 10–15 seconds before serving.
• Add a scoop of vanilla ice cream for an extra indulgent dessert.

Variations

Extra Chocolate

Mix in:

• Fudge chunks
• Dark chocolate chips
• Chocolate ganache topping

Peanut Butter Lovers

• Add extra peanut butter chips.
• Swirl additional peanut butter on top before baking.

Salted Version

Sprinkle flaky sea salt over the finished cake.

Crunchy Version

Add:

• Pretzel pieces
• Roasted peanuts
• Toffee bits

Storage

Refrigerator

Store covered for 5 days.

Freezer

Freeze individual slices for up to 3 months.

Thaw overnight in the refrigerator.

Nutritional Information (Approximate Per Serving)

• Calories: 540
• Protein: 8 g
• Carbohydrates: 63 g
• Fat: 30 g
• Saturated Fat: 13 g
• Cholesterol: 65 mg
• Sodium: 390 mg
• Fiber: 3 g
• Sugar: 46 g

Values will vary depending on the cake mix and candy used.

Benefits

While this is an indulgent dessert, it does provide a few enjoyable qualities:

• Chocolate contains antioxidants from cocoa.
• Peanut butter provides protein and heart-healthy unsaturated fats.
• Cream cheese contributes calcium.
• Peanuts add crunch and healthy fats.
• Great for celebrations, parties, bake sales, and sharing with friends and family.

Frequently Asked Questions (Q&A)

Why is it called an earthquake cake?

The cream cheese mixture sinks into the batter during baking, causing cracks and uneven “earthquake-like” patterns across the surface.

Can I use homemade chocolate cake batter?

Yes. Any chocolate cake batter that yields enough for a 9×13-inch pan works well.

Can I use crunchy peanut butter?

Yes. Crunchy peanut butter adds extra texture and peanut pieces.

Do I have to use Reese’s Peanut Butter Cups?

No. You can substitute peanut butter candies, chopped chocolate bars, or peanut butter chips.

How do I know when it’s done?

The edges should be set, while the center remains slightly soft and gooey. A toothpick inserted near the edge should come out mostly clean.

Can I make it ahead of time?

Yes. Bake it a day ahead, refrigerate, and bring it to room temperature or warm slightly before serving.

Can I freeze it?

Yes. Wrap slices individually in plastic wrap and place them in an airtight freezer bag or container. Freeze for up to 3 months.

Why is my cake gooey?

A slightly gooey center is expected. Overbaking can dry out the cake and reduce its signature creamy texture.

What goes well with this cake?

• Vanilla ice cream
• Fresh strawberries
• Hot coffee
• Cold milk
• Chocolate milkshake
• Salted caramel sauce

Serving Suggestions

Serve warm with a drizzle of melted peanut butter and chocolate sauce, topped with chopped Reese’s Peanut Butter Cups and a scoop of vanilla ice cream for the ultimate dessert experience. It’s also delicious chilled, where the peanut butter cream cheese layer becomes rich and fudgy.