Name: Chocolate Whoopie Pie Cake
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Ingredients: 1 box chocolate fudge cake mix; 1 box instant chocolate fudge pudding mix; 1 cup water; 1 cup vegetable or canola oil; 4 large eggs; 1 cup sour cream or Greek yogurt; 1 teaspoon vanilla extract; 10 tablespoons unsalted butter (room temperature); 1 jar marshmallow creme; 1 pinch salt; 1 teaspoon vanilla extract; 2 cups powdered sugar (divided); 1 cup chocolate chips ((I used milk chocolate)); 3 tablespoons whipping cream

If you’re a fan of chocolate desserts, you’re in for a real treat. The Chocolate Whoopie Pie Cake is a delightful twist on the classic whoopie pie, combining rich chocolate cake with a creamy marshmallow filling all in one cake! This dessert is perfect for birthdays, celebrations, or just when you want to indulge yourself and your loved ones. Let’s dive into how to create this decadent delight that will surely impress anyone who takes a bite.

Why This Recipe is a Keeper

The Chocolate Whoopie Pie Cake is a showstopper that combines the best elements of a classic whoopie pie and a layer cake. With its moist chocolate layers and fluffy marshmallow filling, it’s a crowd-pleaser for both kids and adults alike. The use of simple ingredients means you don’t have to be a professional baker to create this masterpiece. Plus, it’s incredibly versatile—adding your favorite chocolate chips or swapping in different fillings can change things up to keep it exciting!

Ingredient List

1 (15.25-ounce) box chocolate fudge cake mix
1 (3.9-ounce) box instant chocolate fudge pudding mix
1 cup water
1 cup vegetable or canola oil
4 large eggs
1 cup sour cream or Greek yogurt
1 teaspoon vanilla extract
10 tablespoons unsalted butter, room temperature
1 (7-ounce) jar marshmallow creme
1 pinch salt
1 teaspoon vanilla extract
2 cups powdered sugar, divided
1 cup chocolate chips (I used milk chocolate)
3 tablespoons whipping cream

Tools & Equipment Needed

Mixing bowls – for combining ingredients.
Electric mixer – to achieve a smooth and fluffy texture.
Measuring cups and spoons – for accurate ingredient measurements.
Baking pans (two 9-inch round) – to bake the cake layers.
Offset spatula – for spreading the filling evenly.
Cooling rack – to cool the cake layers before assembly.

Build Chocolate Whoopie Pie Cake Step by Step

Step 1: Prepare the Cake Batter

In a large mixing bowl, combine the chocolate fudge cake mix and the chocolate fudge pudding mix. Add in the water, vegetable oil, eggs, sour cream, and vanilla extract. Using an electric mixer, beat the mixture on medium speed for about 2 minutes until the batter is smooth and well combined.

Step 2: Bake the Cake Layers

Preheat your oven to 350°F (175°C). Grease and flour your two 9-inch round baking pans. Divide the batter evenly between the pans and smooth the tops with a spatula. Bake in the preheated oven for 25-30 minutes, or until a toothpick inserted in the center comes out clean. Allow the cake layers to cool in the pans for 10 minutes before transferring them to a cooling rack.

Step 3: Make the Marshmallow Filling

In a separate mixing bowl, beat the unsalted butter until creamy. Add the marshmallow creme, pinch of salt, and 1 teaspoon of vanilla extract. Continue beating until well combined. Gradually add the powdered sugar, one cup at a time, mixing well after each addition. Once it reaches a fluffy consistency, stir in the chocolate chips.

Step 4: Assemble the Cake

Once the cake layers are completely cool, place one layer on a serving plate. Spread a generous layer of the marshmallow filling on top. Carefully place the second cake layer on top of the filling. Use the remaining filling to frost the top and sides of the cake.

Step 5: Drizzle with Chocolate Ganache

In a small saucepan over low heat, combine the chocolate chips and whipping cream. Stir until melted and smooth. Drizzle the ganache over the top of the cake, allowing it to run down the sides for an elegant look.

Variations by Season

Spring: Add fresh berries on top for a fruity touch.
Summer: Incorporate a layer of ice cream between the cake layers for a refreshing dessert.
Fall: Mix in some pumpkin spice to the marshmallow filling for a seasonal twist.
Winter: Add peppermint extract to the filling for a festive flavor.

Insider Tips

Make sure all your ingredients are at room temperature for the best mixing results.
Don’t overmix the batter; just combine until smooth to keep the cake fluffy.
Let your cake layers cool completely to prevent the filling from melting.
For extra chocolate flavor, consider adding cocoa powder to the marshmallow filling.

Make-Ahead & Storage

The Chocolate Whoopie Pie Cake can be made a day in advance. Store it in an airtight container in the refrigerator to keep it fresh. If you plan to store it for longer, you can freeze individual slices. Just wrap them tightly in plastic wrap and place them in a freezer-safe bag.

Reader Q&A

Can I use a different flavor of cake mix?

Absolutely! While the chocolate fudge cake mix works perfectly, you can experiment with other flavors like vanilla or red velvet for a fun twist.

How do I make the cake gluten-free?

To make it gluten-free, substitute the chocolate fudge cake mix with a gluten-free chocolate cake mix. Be sure to check the pudding mix as well for gluten-free options.

Can I make mini whoopie pies instead of a cake?

Yes! You can use a cookie scoop to drop small amounts of batter onto a baking sheet to make mini whoopie pies. Adjust the baking time to about 10-12 minutes.

What can I substitute for sour cream?

If you don’t have sour cream on hand, Greek yogurt is a great substitute that will yield similar results in texture and flavor.

Time to Try It

Now that you have all the steps and tips at your fingertips, it’s time to get baking! The Chocolate Whoopie Pie Cake is not only a delicious dessert but also a fun project to undertake. Whether you’re celebrating a special occasion or simply treating yourself, this cake will undoubtedly satisfy your chocolate cravings. Gather your ingredients, roll up your sleeves, and enjoy the delightful process of creating this indulgent treat. Happy baking!