Tiramisu Frosting

Butter: Replace 1/3 of the butter with room temperature mascarpone cheese. So (instead of using the full six sticks of butter, use four sticks of butter (2 cups) and 1 cup marscarpone cheese.)

Vanilla: Instead of 2 tablespoons of vanilla extract (use 1 tablespoon dark rum, 1 1/2 teaspoons instant espresso powder, and 1 teaspoon vanilla extract.)

Cocoa: After piping on cupcakes or cake (dust frosting with cocoa powder.)