• 1 1/4 cups unsalted butter -- softened
• 2 teaspoons grated lemon rind
• 3 tablespoons fresh lemon juice
• 2 tablespoons Limoncello liqueur
• 3-4 cups confectioner's sugar -- sifted

1. In a mixer bowl, beat butter, lemon rind, lemon juice, and Limoncello on high sped until blended together.
3. Slowly add sifted confectioner's sugar, starting with the 3 cups and adding more to get the desired consistency for spreading or piping.

This goes with my lavender-lemon cupcakes. So easy and so yummy.