Best-Ever Chocolate Cake
["2 c. all-purpose flour", "2 c. sugar", "1 c. margarine", "1/4 c. cocoa", "1 c. water", "1/2 c. buttermilk", "2 whole eggs", "1 tsp. soda", "1 tsp. vanilla", "pinch of salt"]
["Preheat oven to 400\u00b0.", "Lightly grease and flour a 10 x 15-inch pan.", "Put flour and sugar in a large mixing bowl.", "Set aside.", "Cook margarine, cocoa and water, just until mixture comes to a boil. Cool 1 minute.", "Pour mixture over flour and sugar while beating with electric mixer.", "Add buttermilk, eggs, soda, salt and vanilla. Beat 1 minute more.", "Pour batter into prepared pan and bake for 20 minutes.", "Frost while hot with Best-Ever Chocolate Icing."]
["flour", "sugar", "margarine", "cocoa", "water", "buttermilk", "eggs", "soda", "vanilla", "salt"]