- 2 tablespoons warm milk
- 1/2 teaspoon instant coffee powder
- 1 (16 ounce) package confectioners' sugar
- 6 tablespoons butter, melted
- 1/4 cup unsweetened cocoa powder
- 1 1/2 teaspoons vanilla extract
- Stir warm milk and coffee powder in large bowl until the coffee dissolves completely.
- Whisk confectioners' sugar, melted butter, cocoa powder, and vanilla extract into the milk mixture until no clumps remain and you have a smooth frosting.