Texas Sheet Cake
["2 c. unsifted flour", "2 c. sugar", "2 sticks margarine", "7 Tbsp. unsweetened cocoa", "1 c. water", "2 eggs, lightly beaten", "1 tsp. soda", "1/2 c. buttermilk", "1 tsp. vanilla", "1 stick margarine", "4 Tbsp. cocoa", "6 Tbsp. milk", "1 box powdered sugar", "1 c. chopped pecans"]
["Grease and lightly flour a 10 x 15 x 1-inch jelly roll pan. Preheat oven to 400\u00b0.", "In a large mixing bowl, combine flour and sugar.", "Measure into heavy saucepan, 2 sticks margarine, 7 tablespoons cocoa and water.", "Heat to boiling, stirring well.", "Add to flour-sugar mix and blend well.", "In medium bowl, combine beaten eggs.", "Stir soda into buttermilk.", "Add to egg and vanilla.", "Pour into flour mixture.", "Add cocoa and pour into prepared pan.", "Bake 25 minutes or until done."]
["flour", "sugar", "margarine", "unsweetened cocoa", "water", "eggs", "soda", "buttermilk", "vanilla", "margarine", "cocoa", "milk", "powdered sugar", "pecans"]