Texas Sheet Cake - cooking recipe

Ingredients

1 cup margarine
4 tablespoons cocoa
1 cup water
2 cups flour
2 cups sugar
1/2 teaspoon salt
1 teaspoon baking soda
2 eggs
1/2 cup sour cream
Frosting
1/2 cup margarine
4 tablespoons cocoa
6 tablespoons milk
1 (16 ounce) box powdered sugar
1 teaspoon vanilla

Preparation

Bring to Boil: 2 sticks margarine, 4 T cocoa, and 1 cup water.
Into a bowl add: 2 cups flour, 2 cups sugar, 1/2 teaspoons Salt, 1 tsp baking soda, 2 eggs, 1/2 cup sour cream (or milk with one teaspoons vinegar).
While still warm add the mixture from the pan to the bowl and mix well. Grease a large sheet pan. Bake 20 to 25 minutes at 375 degrees.
Frosting: 1 stick oleo, 4 T cocoa, 6 T milk.
Bring to boil. Remove from heat and add 1 box powdered sugar and 1 teaspoons Vanilla. Spread over cooled brownies while frosting is still warm.