Oatmeal Sheet Cake
["1 1/4 c. boiling water", "1 c. uncooked oatmeal", "1/2 c. margarine", "1 c. white sugar", "1 tsp. baking powder", "2 eggs", "1 1/2 c. sifted flour", "1/2 tsp. baking soda", "1 c. brown sugar", "1 tsp. vanilla", "1 tsp. salt", "3/4 tsp. cinnamon"]
["After stirring together, add oatmeal mixture; stir and pour into sheet pan.", "Bake at 375\u00b0 for 30 minutes."]
["boiling water", "oatmeal", "margarine", "white sugar", "baking powder", "eggs", "flour", "baking soda", "brown sugar", "vanilla", "salt", "cinnamon"]