Makes: 24 sandwiches      Cooking Time: 10 min    Please double check all of your ingredients to be sure that they are all gluten free! Ingredients 1 (18.25-ounce) gluten-free cake mix 3/4 cup water 1/2 cup vegetable oil 3 eggs 1 drop each red, yellow, and green food color 1 cup milk 5 tablespoons all-purpose flour – GLUTEN FREE 1 1/4 cups sugar 1 cup vegetable shortening 2 teaspoons vanilla…