2 tablespoons (28 grams) unsalted butter, softened
1 cup (125 grams) confectioner's sugar
1/2 teaspoon vanilla extract
1 to 2 tablespoons (15 to 30 ml) brewed coffee

In a medium bowl, beat the butter and sugar together until light and fluffy. Stir in the vanilla until combined. Add the coffee until desired consistency is reached (I only used 1 tablespoon). For more coffee flavor, add more coffee, but you may need to add additional confectioners' sugar to keep a good consistency.

Ice the cooled cupcakes with the coffee icing. Allow to sit for 15 to 20 minutes, then top with cream cheese frosting.