Chocolate Sheet Cake
["2 c. all-purpose flour", "2 c. sugar", "1 tsp. salt", "1 1/2 tsp. cinnamon", "1 c. buttermilk", "1 tsp. soda", "2 eggs, beaten", "7/8 c. water", "2 sticks margarine", "4 Tbsp. cocoa", "1 tsp. vanilla"]
["Mix first 4 ingredients together in a large bowl; make a \"well\" in center to add buttermilk, soda and eggs. Boil water, margarine and cocoa, then add to mixture. Add vanilla. Pour in 10 x 13-inch cake pan. Bake at 400\u00b0 for 20 minutes. (Check for doneness.)"]
["flour", "sugar", "salt", "cinnamon", "buttermilk", "soda", "eggs", "water", "margarine", "cocoa", "vanilla"]