Chocolate Sheet Cake
["2 c. plain flour", "2 c. sugar", "2 eggs, well beaten", "1 stick margarine", "1 tsp. soda", "pinch of salt", "3 Tbsp. cocoa", "1/2 c. shortening", "1 c. water", "1/2 c. buttermilk", "1 tsp. vanilla"]
["Preheat oven to 400\u00b0.", "Mix sugar, flour, salt and soda in a large mixing bowl.", "Heat margarine, water, cocoa and shortening to boiling.", "Pour over flour mixture.", "(May mix by hand or mixer.) Add the well beaten eggs, buttermilk and the teaspoon vanilla.", "Mix well.", "(Batter is thin.)", "Bake 20 minutes in a greased 11 x 15 x 1-inch pan.", "Let cake cool."]
["flour", "sugar", "eggs", "margarine", "soda", "salt", "cocoa", "shortening", "water", "buttermilk", "vanilla"]