Reeses Peanut Butter Earthquake Cake

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Reese’s Peanut Butter Earthquake Cake-A rich, messy, irresistible dessert that shakes up your sweet tooth—in the best way possible

Introduction

This Earthquake Cake is a wild ride of flavor and texture. It starts with a chocolate cake base, then gets swirled with a creamy peanut butter and cream cheese layer, studded with chocolate chips and Reese’s Peanut Butter Cups. As it bakes, the layers shift and swirl—creating a cracked, cratered top and a gooey, molten center.

It’s not the prettiest cake, but it’s one of the most delicious. Perfect for potlucks, birthdays, or anytime you want to impress without fuss.

Ingredients

For the Cake

  • 1 box chocolate cake mix (plus eggs, oil, and water as listed on the box)

For the Earthquake Layer

  • ½ cup butter, melted
  • 8 oz cream cheese, softened
  • ½ cup creamy peanut butter
  • 1 tsp vanilla extract
  • 2 cups powdered sugar

Mix-Ins & Toppings

  • 1 cup semi-sweet chocolate chips
  • 1½ cups chopped mini Reese’s Peanut Butter Cups

Instructions

Step 1: Prep the Pan
Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish or line with parchment paper.

Step 2: Make the Cake Base
Prepare the chocolate cake mix according to package instructions. Pour the batter into the prepared pan and spread evenly.

Step 3: Make the Peanut Butter Cream Cheese Layer
In a large bowl, beat together melted butter, softened cream cheese, peanut butter, and vanilla until smooth. Gradually add powdered sugar and mix until light and fluffy.

Step 4: Assemble the Earthquake
Spoon dollops of the peanut butter mixture over the cake batter. Use a knife or spatula to swirl gently—don’t overmix. Sprinkle chocolate chips and chopped Reese’s Cups evenly over the top.

Step 5: Bake
Bake for 45–55 minutes, or until the center is mostly set but still slightly gooey. The top will look cracked and cratered—totally normal!

Step 6: Cool & Serve
Let cool for at least 30 minutes before slicing. Serve warm with ice cream or chill for firmer slices.

Tips for Success

  • Don’t over-swirl—you want pockets of gooey filling.
  • Use full-fat cream cheese for best texture.
  • Chop Reese’s Cups small so they melt into the cake.
  • Serve warm for spoonable decadence, or chill for cleaner slices.
  • Add a drizzle of chocolate or caramel sauce for extra indulgence.

Serving Ideas

  • Top with whipped cream or vanilla ice cream
  • Serve with coffee or milk for the ultimate pairing
  • Cut into squares and wrap for edible gifts
  • Add crushed peanuts or pretzels for crunch

Variations to Try

  • Brownie Base: Use brownie mix instead of cake mix
  • Nutella Swirl: Swap peanut butter for chocolate hazelnut spread
  • White Chocolate Chips: For a sweeter twist
  • Gluten-Free: Use a gluten-free cake mix and check candy labels

Storage

  • Store in an airtight container at room temp for 2 days
  • Refrigerate for up to 5 days
  • Freeze individual slices for up to 1 month—thaw before serving

Final Thoughts

This Reese’s Peanut Butter Earthquake Cake is messy, melty, and magnificent. It’s the kind of dessert that gets people talking—and asking for seconds. Whether you’re baking for a crowd or just treating yourself, it’s a guaranteed hit.

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