Hostess Sheet Cake Recipe
Hostess Sheet Cake features a moist, chocolate cake layered with a fluffy marshmallow filling and topped with rich chocolate frosting. Coffee in the batter enhances the chocolate flavor, while the creamy filling adds sweetness and texture. Optional nuts provide crunch. This recipe delivers a delicious, nostalgic dessert that is easy to prepare and perfect for sharing. The combination of flavours and textures makes it a standout treat.
Equipment
- 9×13 inch baking sheet or pan
- Mixing bowls (large and medium)
- Electric mixer or hand whisk
- Measuring cups and spoons
- Spatula
- Cooling rack
- Knife for chopping nuts (if using)
- Spoon or offset spatula for frosting
Ingredients
For The Cake:
- 1 box Devil’s Food Cake Mix
- ½ cup whole milk
- ½ cup vegetable oil
- 3 large eggs
- ½ cup brewed coffee
For The Filling:
- 14 oz marshmallow fluff
- 1 cup salted butter softened
- 2 to 4 tbsp whole milk or heavy cream softened
- 3 cups powdered sugar
- 2 tsp vanilla extract
- ¼ tsp salt
For The Frosting:
- 1 cup salted butter softened
- 4 cups powdered sugar
- ⅓ cup milk
- 1 tsp vanilla extract
- ¼ tsp salt
- ¾ cup cocoa powder
- 1 cup chopped pecans or walnuts
Instructions
Prepare The Cake Batter:
- Preheat oven to 350°F (175°C). In a large bowl, combine the Devil’s Food Cake Mix, eggs, whole milk, vegetable oil, and coffee. Mix with an electric mixer on medium speed until smooth and well combined.
Bake The Cake:
- Pour batter evenly into a greased 9×13 inch baking pan. Bake for about 30 minutes or until a toothpick inserted in the center comes out clean. Remove from oven and allow to cool completely on a cooling rack.
Make The Filling:
- In a medium bowl, beat the softened butter until creamy. Add marshmallow fluff and vanilla extract; mix well. Gradually add powdered sugar, alternating with milk or cream until you reach a spreadable consistency. Add salt and mix thoroughly.
Make The Frosting:
- In a large bowl, beat the butter until creamy. Sift in powdered sugar and cocoa powder. Add milk, vanilla, and salt. Beat until smooth and fluffy. Add more milk if needed for desired consistency.
Assemble The Cake:
- Once the Hostess Sheet Cake Recipe is completely cool, spread the marshmallow filling evenly over the top. Spread the chocolate frosting over the filling layer. Sprinkle chopped pecans or walnuts on top if desired.
Serve:
- Cut into squares and serve. Store leftovers covered at room temperature or refrigerated.
Notes
For a fun twist, sprinkle chopped nuts or mini chocolate chips on top of the frosting before it sets. Whole milk makes the frosting rich and creamy, but you can swap with almond or oat milk for a dairy-free version.