Celebrate Halloween by tinting one-third of the filling with orange food coloring and one-third with yellow food coloring; keep one-third white. You can also flavor the colored fillings with 1 tsp. of your favorite extract, such as orange or almond. For adults-only cookies, stir 1 Tbsp. bourbon or rum into filling before dividing to tint.
Recipe: Crème-Filled Chocolate Sandwich Cookies