Make It
Step 1
Preheat oven to 350° F. Paper-line 20 muffin cups.
Step 2
Combine flour, cocoa, baking soda and 1/2 teaspoon salt in small bowl. Beat granulated sugar, 1/2 cup butter, eggs and 1 teaspoon vanilla extract in large mixer bowl. Gradually beat in flour mixture alternately with 1 cup milk. Spoon 1/4 cup batter into each prepared muffin cup.
Step 3
Bake for 18 to 20 minutes or until wooden pick inserted in centers comes out clean. Cool in pans for 5 minutes; remove to wire racks to cool completely.
Step 4
Microwave morsels, 6 tablespoons butter and remaining 1/2 teaspoon salt in medium, uncovered, microwave-safe bowl on MEDIUM-HIGH (70%) power for 1 minute; STIR. The morsels may retain some of their original shape. If necessary, microwave at additional 10- to 15-second intervals, stirring just until morsels are melted. Transfer to large mixer bowl. Gradually beat in powdered sugar alternately with remaining 1/4 cup milk. Stir in remaining teaspoon vanilla extract. Frost cupcakes with frosting.
Store-bought frosting could be used instead for this recipe if preferred.