Peanut Butter Fudge Cake
["2 c. sugar", "2 c. plain flour", "1 tsp. soda", "2 sticks margarine", "4 Tbsp. cocoa", "1 c. water", "1/2 c. buttermilk", "2 beaten eggs", "1 tsp. vanilla"]
["Pour boiled mixture over sugar, flour and soda; mix well. Pour into a well-greased and floured 12 x 9 x 2-inch baking pan. Bake for 25 minutes at 350\u00b0.", "Let cool in pan."]
["sugar", "flour", "soda", "margarine", "cocoa", "water", "buttermilk", "eggs", "vanilla"]