On October 10, a coworker and I celebrate an Anniverthday. What’s an Anniverthday, you ask? It’s a combination anniversary (mine), and birthday (hers). This year was even better because another coworker of ours got married as well. When she came back from her mini-moon, we were ready to celebrate.
The only rule about an Anniverthday cupcake is that it must be some sort of hybrid, as our invented holiday is also some sort of hybrid.
The new bride requested something chocolate and peanut butter in nature, and I went straight to these. I love when someone gives me the opportunity to make a cupcake I’ve been waiting for. I debated splitting the recipe in half and then I realized that there’s no such thing as too many peanut butter frosting-ed cupcakes.
These are some of my favorites.
To make about 30, you will need:
For the cupcakes:
3 cups cake flour
1 tbsp. baking powder
½ tsp. salt
2 sticks (1 cup) unsalted butter, at room temperature
1½ cups sugar
1 cups malted milk powder
5 large eggs, at room temperature
1 tbsp. vanilla extract
1¼ cups buttermilk, at room temperature
For the filling:
8 oz. bittersweet chocolate, finely chopped
1 cup heavy cream
4 tbsp. unsalted butter, at room temperature
1½ cups coarsely chopped pretzels
For the frosting:
3 sticks (1½ cups) unsalted butter, at room temperature
1 cup creamy peanut butter
4½ cups confectioners’ sugar, sifted
Pinch of coarse salt
2 tsp. vanilla extract
3 tbsp. heavy cream
Mini pretzels drizzled with melted chocolate (I used Flips)
To make the cupcakes, preheat the oven to 350˚ F. Line cupcake pans with paper liners. In a medium bowl, combine the cake flour, baking powder, and salt. Whisk to blend and set aside. In the bowl of an electric mixer, beat the butter on medium-high speed until smooth, about 1 minute. Gradually add in the sugar, about ¼ cup at a time, mixing for 1 minute after each addition. Blend in the malted milk powder. Beat in the eggs one at a time, scraping down the bowl and mixing well after each addition. Beat in the vanilla. With the mixer on low speed, add the dry ingredients alternately with the buttermilk, beginning and ending with the dry ingredients and mixing each addition just until incorporated.
Divide the batter between the prepared liners. Bake until a toothpick inserted in the center comes out clean, about 18-20 minutes. Allow to cool in the pans 5-10 minutes, then transfer to a wire rack to cool completely.
To make the ganache, place the chopped chocolate in a heatproof bowl. Add the cream to a saucepan and bring to a simmer (or warm in the microwave). Remove from the heat and pour the hot cream over the chocolate; let stand 1-2 minutes. Whisk together until a smooth ganache forms. Whisk in the butter 1 tablespoon at a time until completely incorporated. Let stand at room temperature, whisking occasionally, until slightly thickened.
To fill the cupcakes, use the cone method to fill the cupcakes part way with ganache. Top off each ganache center with some of the chopped pretzel pieces (or a few pretzel M&Ms). (You don’t need to replace the cake tops for these cupcakes but you can if you would like.)
To make the frosting, combine the butter and peanut butter in the bowl of an electric mixer. Beat on medium-high speed until smooth. Mix in the confectioners’ sugar and salt. With the mixer on low speed, mix in the vanilla and cream just until incorporated. Increase the mixer speed to medium-high and whip until light and very fluffy, about 4 minutes. Transfer the frosting to a pastry bag fitted with a plain round tip (I used Ateco #809). Pipe a swirl of frosting on top of each cupcake. Garnish with a chocolate drizzled pretzel.