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Home » Reeses Peanut Butter Earthquake Cake: Recipe, Tips & Delicious Variations

Reeses Peanut Butter Earthquake Cake: Recipe, Tips & Delicious Variations

July 10, 2025 by lila

Reeses Peanut Butter Earthquake Cake: Prepare to have your dessert world rocked! Imagine a cake so decadent, so intensely peanut buttery, that it literally quakes with deliciousness. This isn’t your average bake sale treat; it’s a showstopper, a conversation starter, and a guaranteed crowd-pleaser that will leave everyone begging for seconds.

While the exact origins of Earthquake Cake are shrouded in mystery, its popularity exploded in the late 20th century, quickly becoming a staple in potlucks and family gatherings across America. Its appeal lies in its simplicity and the sheer indulgence it offers. The combination of rich chocolate cake, creamy peanut butter, and a gooey, almost molten, filling creates a symphony of textures and flavors that’s simply irresistible.

What makes this Reeses Peanut Butter Earthquake Cake so beloved? It’s the perfect marriage of convenience and decadence. It’s surprisingly easy to make, even for novice bakers, and the results are always spectacular. The moist, fudgy cake, the pockets of melted peanut butter cups, and the creamy, cheesecake-like filling create a textural masterpiece that’s both comforting and exciting. Plus, who can resist the classic combination of chocolate and peanut butter? It’s a flavor pairing that transcends generations, making this cake a timeless favorite. Get ready to experience a dessert that’s truly earth-shattering!

Reeses Peanut Butter Earthquake Cake this Recipe

Ingredients:

  • 1 box (18.25 ounces) chocolate cake mix
  • 1 cup water
  • 1/2 cup vegetable oil
  • 3 large eggs
  • 1 cup creamy peanut butter
  • 1 cup powdered sugar
  • 8 ounces cream cheese, softened
  • 1/2 cup butter, softened
  • 1 teaspoon vanilla extract
  • 1 jar (12 ounces) hot fudge topping
  • 1 1/2 cups Reese’s Peanut Butter Cups, chopped (about 20 cups)

Preparing the Cake Batter:

Okay, let’s get started with the foundation of our Reese’s Peanut Butter Earthquake Cake – the chocolate cake! This part is super easy, so don’t worry if you’re not a seasoned baker. We’re using a boxed mix to keep things simple and delicious.

  1. Preheat your oven to 350°F (175°C). This is crucial! Make sure your oven is properly preheated before you even think about putting the cake in. A consistent temperature is key to even baking.
  2. Grease and flour a 9×13 inch baking pan. This step is non-negotiable. Trust me, you don’t want your beautiful cake sticking to the pan. You can use cooking spray with flour in it, or grease it with butter or shortening and then dust it with flour. Make sure to get into all the corners!
  3. In a large bowl, combine the chocolate cake mix, water, vegetable oil, and eggs. I like to use a stand mixer for this, but a hand mixer or even a good old-fashioned whisk will work just fine. Just make sure everything is well combined.
  4. Beat the mixture until smooth. This usually takes about 2-3 minutes with an electric mixer. You want to make sure there are no lumps of dry cake mix remaining. The batter should be nice and glossy.
  5. Pour the batter into the prepared baking pan. Spread it evenly across the bottom of the pan. This will ensure that the cake bakes evenly.

Creating the Peanut Butter Swirl:

Now for the fun part – the peanut butter swirl that gives this cake its signature “earthquake” look and, of course, that amazing peanut butter flavor! This is where the magic happens, so pay close attention.

  1. In a separate bowl, combine the peanut butter and powdered sugar. I recommend using a stand mixer or a hand mixer for this, as the mixture can be quite thick.
  2. Beat until well combined and crumbly. The mixture will be quite dry and crumbly, almost like peanut butter cookie dough. Don’t worry, that’s exactly what we want!
  3. Evenly sprinkle the peanut butter mixture over the chocolate cake batter in the pan. Try to distribute it as evenly as possible. Don’t worry about covering every single inch of the chocolate batter; we want some of the chocolate to peek through.

Making the Cream Cheese Filling:

This cream cheese filling is what really sets this cake apart. It adds a tangy sweetness that perfectly complements the chocolate and peanut butter. Make sure your cream cheese and butter are softened for the best results!

  1. In another bowl, combine the softened cream cheese, softened butter, and vanilla extract. Again, a stand mixer or hand mixer is your best friend here.
  2. Beat until smooth and creamy. This usually takes about 2-3 minutes. You want the mixture to be light and fluffy, with no lumps of cream cheese remaining.
  3. Drop spoonfuls of the cream cheese mixture over the peanut butter layer. Don’t spread it out; just drop dollops randomly across the surface. This will create those characteristic “earthquake” cracks as the cake bakes.

Baking the Earthquake Cake:

Alright, we’ve done all the prep work! Now it’s time to bake this masterpiece. The baking time is crucial, so keep a close eye on it.

  1. Bake in the preheated oven for 40-50 minutes, or until a wooden skewer inserted into the center comes out with moist crumbs. The baking time may vary depending on your oven, so start checking it around 40 minutes. You want the cake to be set but still slightly moist in the center. Avoid overbaking, as this will make the cake dry.
  2. Let the cake cool completely in the pan. This is important! Don’t try to rush it. The cake needs to cool completely before you add the toppings, or the hot fudge will melt and make a mess.

Adding the Finishing Touches:

The cake is baked and cooled – now for the grand finale! This is where we add the hot fudge and Reese’s Peanut Butter Cups to really take this cake over the top.

  1. Warm the hot fudge topping according to the jar’s instructions. Usually, this involves microwaving it for a short period of time. Be careful not to overheat it, or it will splatter.
  2. Pour the warmed hot fudge topping over the cooled cake. Spread it evenly across the surface.
  3. Sprinkle the chopped Reese’s Peanut Butter Cups over the hot fudge topping. Make sure to cover the entire surface of the cake with those delicious peanut butter cups!
  4. Refrigerate for at least 30 minutes before serving. This will allow the hot fudge to set and the flavors to meld together.

Tips for Success:

  • Don’t overmix the cake batter. Overmixing can lead to a tough cake. Mix just until the ingredients are combined.
  • Make sure your cream cheese and butter are softened. This will ensure that the cream cheese filling is smooth and creamy.
  • Don’t overbake the cake. Overbaking will result in a dry cake. Check it frequently towards the end of the baking time.
  • Let the cake cool completely before adding the toppings. This will prevent the hot fudge from melting and making a mess.
  • Get creative with your toppings! Feel free to add other toppings, such as chopped peanuts, chocolate chips, or caramel sauce.
Serving Suggestions:

This Reese’s Peanut Butter Earthquake Cake is delicious on its own, but it’s even better with a scoop of vanilla ice cream or a dollop of whipped cream. It’s the perfect dessert for any occasion, from birthday parties to potlucks to a simple weeknight treat. Enjoy!

Reeses Peanut Butter Earthquake Cake

Conclusion:

This Reese’s Peanut Butter Earthquake Cake isn’t just a dessert; it’s an experience! From the moment you pull it out of the oven, the intoxicating aroma of peanut butter and chocolate will fill your kitchen, promising a treat that’s as delightful to smell as it is to eat. The gooey, decadent center, swirled with creamy peanut butter and studded with Reese’s Peanut Butter Cups, is what truly sets this cake apart. It’s a textural masterpiece, offering a delightful contrast between the slightly crisp edges and the unbelievably moist, almost molten interior. If you’re looking for a show-stopping dessert that’s guaranteed to impress, look no further.

But the best part? It’s surprisingly easy to make! Forget complicated techniques and finicky ingredients. This recipe is straightforward and forgiving, making it perfect for both seasoned bakers and those just starting out. The “earthquake” effect, that beautiful cracking and swirling on top, happens naturally as it bakes, so you don’t have to worry about achieving perfection. It’s rustic, charming, and utterly delicious.

Serving Suggestions and Variations:

While this cake is incredible on its own, a few simple additions can elevate it even further. A scoop of vanilla ice cream or a dollop of whipped cream provides a cool, creamy contrast to the rich cake. For an extra touch of indulgence, drizzle some melted chocolate or peanut butter over the top.

Want to experiment? Try these variations:

* Chocolate Lover’s Dream: Add chocolate chips to the batter for an even more intense chocolate flavor.
* Salty-Sweet Sensation: Sprinkle a pinch of sea salt over the top of the cake before baking to enhance the peanut butter flavor.
* Nutty Delight: Incorporate chopped peanuts or pecans into the batter for added crunch.
* Mini Earthquake Cakes: Bake the batter in muffin tins for individual servings. Reduce the baking time accordingly.
* Caramel Swirl: Drizzle caramel sauce into the batter along with the peanut butter for an extra layer of sweetness.

Time to Bake!

I truly believe that this Reese’s Peanut Butter Earthquake Cake will become a new family favorite. It’s the perfect dessert for birthdays, holidays, or any occasion that calls for a little bit of indulgence. It’s also a great way to use up any leftover Halloween candy!

So, what are you waiting for? Preheat your oven, gather your ingredients, and get ready to bake a cake that will truly rock your world. I’m confident that you’ll love this recipe as much as I do.

And now, the most important part: I want to hear about your experience! Did you try the recipe? Did you make any variations? What did your family and friends think? Share your photos and stories in the comments below. I can’t wait to see your creations and hear all about your baking adventures. Happy baking! I hope you enjoy this Reese’s Peanut Butter Earthquake Cake as much as my family and I do!


Reeses Peanut Butter Earthquake Cake: Recipe, Tips & Delicious Variations

Decadent chocolate cake with peanut butter swirl and cream cheese filling, topped with hot fudge and Reese's Peanut Butter Cups. A guaranteed crowd-pleaser!

Save This Recipe
Prep Time25 minutes
Cook Time40 minutes
Total Time105 minutes
Yield12-16 servings
👨‍🍳By: Lila
📂Category: Dessert
📊Difficulty: Easy
🌍Cuisine: American
🍽️Yield: 12-16 servings
🥗Dietary: Vegetarian

Ingredients

Instructions

Recipe Notes

  • Don’t overmix the cake batter.
  • Make sure your cream cheese and butter are softened.
  • Don’t overbake the cake. Check it frequently towards the end of the baking time.
  • Let the cake cool completely before adding the toppings.
  • Get creative with your toppings! Feel free to add other toppings, such as chopped peanuts, chocolate chips, or caramel sauce.
  • Serving Suggestions: This Reese’s Peanut Butter Earthquake Cake is delicious on its own, but it’s even better with a scoop of vanilla ice cream or a dollop of whipped cream.

Frequently Asked Questions

→ How do I ensure the bread stays moist?
Use fresh, ripe ingredients and avoid overmixing the batter. Store in an airtight container.
→ Can I substitute ingredients?
Yes, you can substitute similar ingredients while maintaining the basic ratios for best results.
→ How long does this bread keep?
Store tightly wrapped at room temperature for 2-3 days, or refrigerate for up to a week.
→ What if I don't have all the spices?
You can adjust spices to taste or substitute with similar warming spices.
→ Can I freeze this bread?
Yes, wrap individual slices and freeze for up to 3 months. Thaw at room temperature before serving.

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