Chocolate Peanut Butter Cupcakes

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Oooh….these cupcakes from Oh Sweet Basil are like a miniature two layer cake with peanut butter buttercream frosting BETWEEN cake layers topped with chocolate ganache.   A little extra work but oh so very worth it.  I’m thinking you will need to eat these with a fork.  And a tall glass of milk.

Chocolate Peanut Butter Cupcakes

Makes about 16 cupcakes


for the cupcakes:
  • 1/4 cup + 2 tablespoons unsweetened dutch-process cocoa powder + extra for dusting
  • 1/4 cup + 2 tablespoons hot water
  • 1 1/2 cups all-purpose flour
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 3/4 cup (1.5 sticks) unsalted butter
  • 1 cup + 2 tablespoons sugar
  • 2 large eggs, at room temperature
  • 2 teaspoons vanilla extract
  • 1/2 cup sour cream, at room temperature
for the frosting:
  • 3/4 cup (1.5 sticks) unsalted butter, at room temperature
  • 1 3/4 cup confectioners’ sugar
  • 3/4 cup creamy peanut butter
  • pinch of salt
for the chocolate ganache:
  • 6 ounces semisweet chocolate, chopped
  • 2/3 cup heavy cream
  • 1 tablespoon light corn syrup
  • peanut butter cups, for garnish


  1. preheat oven to 350 degrees f. butter a standard muffin tin and dust with cocoa powder; tapping out excess.
  2. in a glass measuring cup, whisk together cocoa powder and hot water until smooth. in a medium bowl, whisk together flour, baking soda, baking powder, and salt.
  3. in a small medium saucepan over medium-low heat, melt butter with sugar, stirring until combined. remove from heat and pour into the bowl of an electric mixer fitted with the paddle attachment. beat on medium-low speed until mixture is cool, about 5 minutes. add eggs, one at a time, beating until incorporated. add vanilla and cocoa mixture; beat until combined. reduce speed to low. add flour mixture in two batches, alternating with the sour cream, beating until just combined.
  4. divide batter evenly among muffin cups, filling each 2/3 full. bake 16-18 minutes, or until a toothpick inserted into the center comes out clean. transfer to a wire rack to cool 15 minutes; invert cupcakes onto rack and cool completely.
  5. in an electric mixer fitted with the paddle attachment, beat butter until light and creamy, about 4 minutes. with the mixer on low speed, slowly add powdered sugar. gradually increase the speed and mix for another 4 minutes. add peanut butter and salt. beat until fully combined and frosting reaches the desired consistency.
  6. to make the ganache, place chopped chocolate in a medium heatproof bowl. heat cream and corn syrup just to a simmer in a small saucepan over medium-high heat. pour hot mixture over chocolate. let stand one minute, then stir until chocolate is completely melted and mixture is smooth.


7. to assemble, cut each cupcake in half horizontally, such that you have a top and bottom layer. sandwich frosting between the top and bottom cupcake layer. spoon the ganache over the cupcakes and sprinkle with crumbled peanut butter cups. serve immediately.



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