Apple Topping (for any cake)

Method

1. Beat 1 cup (2 sticks) butter, softened, in large bowl of an electric mixer on medium speed until light, fluffy, and almost white in appearance.
2. Add the apple butter and mix well. Then add in the 2 cups powdered sugar.
3. Beat until well blended. Add more powdered sugar to stiffen the buttercream, or a bit of milk to make the buttercream more spreadable.
4. Frost the Sponge Cake/Cupcakes using a knife, or decorate with an icing bag and tip (Wilton tip 1M) to make a pretty swirl.
5. Add the diced Apple Bits and Apple Slices onto the frosting