Dipped chocolate sandwich cookies with festive frosting, chocolate

Chocolate sandwich cookie (unbleached enriched flour [wheat flour, niacin, reduced iron, thiamine mononitrate, riboflavin, folic acid], sugar, palm oil and/or canola oil, cocoa processed with alkali, high fructose corn syrup, leavening [baking soda and/or calcium phosphate], salt, soy lecithin, chocolate, artificial flavor), white chocolate (sugar, cocoa butter, whole milk powder, nonfat dry milk, soy lecithin, natural vanilla extract), dark chocolate (unsweetened chocolate, sugar, cocoa butter, soy lecithin, natural vanilla extract), sparkling sugar (sugar, carnauba wax), red color (medium chain triglycerides, red 40 lake, soy lecithin), orange color (medium chain triglycerides, yellow 6 lake, soy lecithin).