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Fudgy Brownie Cupcakes with Chocolate Buttercream

Fudgy Brownie Cupcakes with Chocolate Buttercream

Dense, chewy chocolate brownie batter baked in a muffin tin and topped with chocolate buttercream.
Prep Time 1 hour 30 minutes
Cook Time 33 minutes
Total Time 2 hours 3 minutes
Course Dessert
Cuisine American
Servings 9 cupcakes
Calories 455 kcal

Equipment

  • muffin tin
  • paper liners
  • Small saucepan
  • Whisk
  • piping bag or spoon

Ingredients
  

Main Ingredients

  • ½ cup unsalted butter 1 stick
  • ½ cup semisweet chocolate chips
  • 2 large eggs room temperature
  • ¾ cup granulated sugar
  • ½ cup all purpose flour
  • ¼ tsp kosher salt
  • 1 tsp pure vanilla extract
  • 1 ½ oz milk chocolate bar about 1 bar, broken into 9 pieces
  • ½ cup unsalted butter softened, for the frosting
  • 1 ½ cup powdered sugar
  • ¼ cup unsweetened cocoa powder
  • 2 tbsp milk
  • ½ tsp pure vanilla extract

Instructions
 

Cooking

  • Prep the tin. Heat the oven to 325 degrees F and line 9 wells of a muffin tin with paper liners.
  • Melt and cool. Melt the butter and chips over medium low heat, stirring smooth, then let the mixture cool completely.
  • Make the batter. Whisk the eggs with the sugar, then whisk in the flour, salt, and vanilla. Fold in the cooled chocolate until smooth.
  • Bake. Fill each liner about three quarters full and bake for 30 to 33 minutes, until a toothpick comes out clean. Cool 10 minutes in the tin, then cool fully on a rack.
  • Frost. Beat the softened butter, powdered sugar, cocoa, milk, and vanilla until fluffy, then frost the cupcakes and press a milk chocolate piece into each.

Notes

Substitutions: Use dark chocolate chips for a deeper flavor.
Tips: Cool the melted chocolate completely so it does not cook the eggs. Do not taste the raw batter because it contains raw eggs.
Storage: Keep at room temperature for up to 3 days or refrigerate for up to 4 days. Freeze unfrosted cupcakes for up to 3 months.
Keyword Brownie Cupcakes, Buttercream Cupcakes, Chocolate Buttercream, Chocolate Cupcakes, fudgy brownie cupcakes