Amount Ingredient 1 c. margarine, room temperature 1 1/2 c. sugar 2 eggs, room temperature 1 tsp. vanilla 1 1/2 tsp xanthan gum 1 1/4 c. rice flour (brown or white) 1/2 c. + 2 Tbsp. cornstarch 1/2 c. + 2 Tbsp. tapioca starch/flour 2 Tbsp cocoa powder 1 tsp salt 1 tsp baking soda 1 tsp baking powder 1 c. buttermilk 1 tsp vinegar red food coloring
Cream margarine and sugar. Add eggs one at a time. Sift together dry ingredients and set aside. Combine remaining wet ingredients and set aside. Alternate adding dry ingredients and wet ingredients until everything is well combined. Add red food coloring to batter, if desired. Bake at 325 until it springs back when touched lightly in the middle (about 30 minutes for cupcakes and about 50-60 minutes for a cake).