Homemade Caramel Hostess Cupcake Cake.

Homemade Caramel Hostess Cupcake Cake. Sweet, nostalgic, a little messy, and so much fun! This is my homemade take on the classic Hostess cupcake — but with a twist. Rich chocolate cake layers made with cocoa powder and dark chocolate, sandwiched together with a gooey caramel-marshmallow creme, then finished with a creamy chocolate glaze. It’s indulgent, over-the-top, and the perfect cake to share. Just know, it’s a little messy…but that’s exactly what makes it so delicious!

I baked this cake for the long weekend, and I couldn’t be more excited to share it with you!

When I first started testing, the plan was to make a simple hostess sheet cake with the classic marshmallow fluff filling — just like my Homemade Hostess Cupcakes, only bigger. That would have been good, but mid-bake I got bored and decided to change things up.

So I called my mom (very urgent, of course) and went on for five minutes about fillings. Together we landed on the idea of a caramel-marshmallow creme made with butter, brown sugar, and a bag of mini marshmallows. We both knew immediately it would be SO much better — and it was.

Because of the marshmallows, the cake is stickier and a little more rustic-looking than most layer cakes. But don’t worry about perfection — the gooeyness is what makes every bite extra yummy.

Here are the details

Cake Ingredients:

• salted butter
• eggs
• buttermilk
• plain Greek yogurt – or use sour cream
• granulated sugar
• vanilla extract
• all-purpose flour
• cocoa powder
• baking powder
• baking soda
• salt
• hot brewed coffee
• semi-sweet or dark chocolate chips (optional)

Caramel Marshmallow Fluff Ingredients:

• salted butter
• dark brown sugar
• flaked sea salt
• mini marshmallows

Glaze Ingredients:

• chocolate chips
• whole milk
• white chocolate

Special Tools

For this sheet cake, you’ll need a rectangular cake pan, a mixing bowl, an electric mixer, and a medium pot for making the filling and melting the chocolate.

Steps

Step 1: Make the cake batter

In a mixing bowl, whisk together the granulated sugar and the wet ingredients: melted butter, eggs, buttermilk, Greek yogurt (or sour cream), and vanilla.

Stir in the dry ingredients: flour, cocoa powder, baking powder, baking soda, and salt. Lastly, mix in the hot coffee (if you don’t love baking with coffee, you can use hot water or milk, but the coffee really brings out the chocolate flavor without overpowering it).

Step 2: Bake the cake

Pour the batter into a greased 9×13-inch pan and bake until set. Let the cake cool completely in the pan before adding the filling.

Step 3: Make the caramel marshmallow fluff

In a saucepan, melt a stick of salted butter with dark brown sugar and a splash of water. Bring the mixture to a boil and cook until thickened, about 5 minutes. Add a pinch of flaky sea salt, if you’d like.

Stir in the mini marshmallows and keep stirring until they’re completely melted into a smooth caramel fluff.

Step 4: Add the filling

Once the cake is cool, quickly pour the caramel marshmallow fluff over top. Spread it out evenly with a spatula, leaving a small border around the edges so it doesn’t spill down the sides. The fluff will begin to set as it cools, so work fast. Let it set for at least 30 minutes (longer is even better).

Step 5: Make the glaze

In a small saucepan over low heat, melt semi-sweet chocolate chips with milk or heavy cream until smooth and glossy. Add a pinch of salt for extra flavor.

Step 6: Glaze and decorate

Slowly pour the glaze over the caramel fluff, spreading it gently to the edges without pressing too hard. Let the glaze set for at least 1 hour.

Melt a little white chocolate and transfer it to a piping bag (or zip-top bag with the corner snipped). Pipe loops across the top of the cake. Don’t stress about perfection — the more imperfect they are, the cuter they look!

Step 7: Slice and enjoy

Once fully set, slice the cake into squares using a sharp knife. It is helpful to run the knife under hot water, dry it, then slice. This will give you cleaner slices. Just prepare yourself, the slices won’t be perfectly clean (marshmallow is sticky!), but embrace the mess — it’s all part of the fun.

Every bite is rich chocolate cake, gooey caramel marshmallow, and fudgy glaze. Honestly, so much better than any store-bought Hostess Cupcake!

Looking for easy party desserts? Here are a few ideas: 

Chewy Chocolate Peanut Butter Bars

Crinkle Top Brownies

Chocolate Peanut Butter Pretzel Blondies

Homemade Vegan Peanut Butter Twix Bars

Caramel Butter Cake with Fudgy Chocolate Frosting

Retro-Style Chocolate Sheet Cake

Lastly, if you make this Homemade Caramel Hostess Cupcake Cake, be sure to leave a comment and/or give this recipe a rating! Above all, I love to hear from you guys and always do my best to respond to each and every comment. And, of course, if you make this recipe, don’t forget to tag me on Instagram! Looking through the photos of recipes you all have made is my favorite!