I got this recipe from Betty Crocker. I made some measurement adjustments and the end result is yummy and cute.
Heat oven to 350. Line 24 muffin cups with paper liners. Lightly spray cups with cooking spray.
Put frosting containers in microwave for 20 seconds. With a star tip, pipe frosting into dip on top of each cup. Refrigerate for at least one hour before serving. Store in fridge, covered.