Brownie Sheet Cake
["2 c. flour", "2 c. sugar", "2 Tbsp. cocoa", "2 eggs, beaten", "1/2 c. buttermilk", "1/2 tsp. salt", "2 sticks margarine", "1 c. water", "1 tsp. soda", "1 tsp. vanilla", "1 tsp. cinnamon (optional)"]
["Combine flour, sugar, and salt, set aside.", "In a saucepan, put margarine, water and cocoa.", "Bring to a boil and pour over flour-sugar mixture.", "Add eggs, soda, buttermilk, and vanilla to mixture.", "Bake in greased and floured deep cookie sheet (15 1/2 x 10 1/2 x 1 inches).", "Bake 20 minutes at 350\u00b0."]
["flour", "sugar", "cocoa", "eggs", "buttermilk", "salt", "margarine", "water", "soda", "vanilla", "cinnamon"]