From 125 Best Cupcakes Recipes. Didn't have any chocolate cream liqueur - used Peach Snaps!! :) Made half the recipe to frost my Very Vanilla Chocolate Chip Cupcakes.
- In a food processor fitted with a metal blade, process confectioner's sugar, cocoa powder, butter, chocolate liqueur, coffee and salt until smooth, scraping down sides as necessary.
- Spread frosting on cooled cupcakes.