Chocolate Sheet Cake
["2 c. sugar", "2 c. self-rising flour", "1 tsp. ground cinnamon", "1 c. water", "1 stick margarine", "1/2 c. cooking oil", "4 Tbsp. cocoa", "1/2 c. buttermilk", "2 eggs, slightly beaten", "1 tsp. vanilla"]
["Sift together sugar, flour, soda and cinnamon; set aside.", "In a saucepan, combine water, margarine, oil and cocoa.", "Bring to a boil and pour over dry ingredients, mixing well.", "Combine buttermilk, eggs and vanilla and add to batter.", "Pour batter into a greased and floured 13 x 9 x 2-inch pan and bake at 400\u00b0 for 20 minutes.", "Start icing about 5 minutes before cake is done and frost in pan."]
["sugar", "flour", "ground cinnamon", "water", "margarine", "cooking oil", "cocoa", "buttermilk", "eggs", "vanilla"]