Texas Sheet Cake
["2 sticks margarine", "1 c. water", "4 Tbsp. cocoa", "2 c. sugar", "2 c. flour", "1/2 tsp. salt", "1 tsp. baking soda", "1/2 c. sour cream", "2 eggs"]
["Bring to boil in heavy pan margarine, water and cocoa. Combine remaining cake ingredients in bowl and add margarine mixture.", "Pour into greased 11 x 17-inch pan and bake at 325\u00b0 for 25 minutes."]
["margarine", "water", "cocoa", "sugar", "flour", "salt", "baking soda", "sour cream", "eggs"]