Homemade Hostess Chocolate Cupcakes (Printable Version)

Chocolate cupcakes with marshmallow cream filling and glossy ganache topping, finished with classic white icing swirls.

# Ingredient List:

→ Chocolate Cupcakes

01 - 1 cup all-purpose flour
02 - ½ cup unsweetened cocoa powder
03 - 1 cup granulated sugar
04 - ½ teaspoon baking soda
05 - 1 teaspoon baking powder
06 - ¼ teaspoon salt
07 - ½ cup buttermilk, room temperature
08 - ½ cup vegetable oil
09 - 2 large eggs, room temperature
10 - 2 teaspoons vanilla extract
11 - ½ cup hot water

→ Cream Filling

12 - ⅓ cup unsalted butter, softened
13 - ¾ cup powdered sugar
14 - 1 cup marshmallow creme
15 - 1 teaspoon vanilla extract
16 - 1–2 teaspoons milk, as needed for consistency

→ Chocolate Ganache

17 - ½ cup semi-sweet chocolate chips
18 - ¼ cup heavy cream

→ White Icing Swirl

19 - ¼ cup powdered sugar
20 - 1 teaspoon milk, plus more as needed

# Step-by-Step Instructions:

01 - Preheat oven to 350°F. Line a 12-cup muffin tin with paper liners.
02 - In a mixing bowl, whisk together the flour, cocoa powder, sugar, baking soda, baking powder, and salt until evenly distributed.
03 - Add the buttermilk, vegetable oil, eggs, and vanilla extract to the dry mixture. Mix until just combined, then pour in the hot water and stir until the batter is smooth. The batter will be thin — this is normal.
04 - Divide the batter evenly among the prepared liners, filling each about two-thirds full. Bake for 18 to 20 minutes, or until a toothpick inserted into the center comes out clean.
05 - Transfer the cupcakes to a wire rack and allow them to cool completely before proceeding with assembly.
06 - Beat the softened butter with an electric mixer until light and creamy. Add the powdered sugar and beat for 1 minute. Mix in the marshmallow creme and vanilla extract, beating until the filling is fluffy and smooth. If the consistency is too thick, add milk one teaspoon at a time until it reaches a pipeable texture.
07 - Using a small knife or cupcake corer, remove a small portion from the center of each cooled cupcake, reserving the removed tops if desired. Transfer the cream filling to a piping bag and fill each cavity. Replace the reserved tops over the filling.
08 - Heat the heavy cream in a small saucepan until steaming but not boiling. Pour the hot cream over the chocolate chips and let sit for 2 minutes. Stir until the mixture is glossy and completely smooth.
09 - Spoon the ganache over the top of each cupcake or dip the tops directly into the ganache, allowing the excess to drip off. Set aside until the glaze is set.
10 - Stir together the powdered sugar and milk until smooth and pipeable, adjusting with additional milk as needed. Transfer to a piping bag fitted with a fine tip or a zip-top bag with a small corner snipped off. Pipe the classic squiggly swirl across the top of each cupcake.
11 - Allow the glaze and icing to set before serving. Enjoy at room temperature for the best texture and flavor.

# Tips from hearthlykitchen:

01 -
  • The marshmallow filling is fluffier and more real tasting than anything you will find in a plastic wrapper.
  • Once you nail the ganache dip, you will feel like a legitimate pastry chef without any professional training.
02 -
  • Warm cupcakes will melt the filling into a puddle, so patience during cooling is nonnegotiable.
  • The batter being thin is completely normal and is actually what makes these cupcakes soft and tender.
03 -
  • A melon baller works just as well as a cupcake corer and costs about a quarter of the price.
  • If your ganache breaks or looks oily, stir in a teaspoon of warm cream and it should come back together beautifully.