Ingredients

• 1 1/4 cups all-purpose flour
• 1/2 teaspoons baking powder
• 1/4 teaspoon baking soda
• 1/4 teaspoon salt
• 2 large eggs, room temperature
• 2 large yolks
• 1 cup sugar
• 3/4 cup unsalted butter, melted
• 2 teaspoons pure vanilla extract
• 1/2 cup buttermilk
• 1 stick butter, softened
• 8 ounces cream cheese, softened
• 3 cups confectioners' sugar, sifted
• 4 ounces semisweet chocolate, melted
• 1 teaspoon vanilla extract

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Instructions

1. Special equipment: 12 muffin cups
2. Preheat oven to 350 degrees F.
3. Sift the flour, baking powder, baking soda and salt together onto a sheet of parchment paper.
4. In a large bowl beat the eggs, yolks and sugar together. Add the melted butter, vanilla and buttermilk to the mixture.
5. Add the dry ingredients gradually into the batter. Mix until smooth. It will appear light and fluffy.
6. Ladle and divide the batter evenly among muffin cups and bake for about 18 minutes, or until a toothpick tester comes out clean. Let cupcakes cool on a wire rack for 15 minutes before frosting.
7. For the frosting: Beat the butter and cream cheese until creamy. Add confectioners' sugar slowly, while mixing in melted chocolate and vanilla extract.