Jamie Feller's Famous Chocolate Sheet Cake

2 cups sugar
2 cups flour
2 sticks butter
2 eggs
1/2 tsp salt
6 Tbs coca
1 tsp baking soda
1 cup water
1/2 cup sour cream

Preheat oven 350. Grease and flour 11x15 or 12x17 pan.
Mix dry ingredients except baking soda.
Bring butter, water, cocoa to a boil and add to dry ingredients.
Stir in eggs, sour cream and baking soda.
Bake 20-25 minutes. Do not over bake!

Frosting

2 cups powdered sugar
1/2 stick butter
2 Tbs cocoa
1 tsp vanilla
milk
chopped walnuts

Boil sugar, butter, cocoa, milk. Stir in walnuts and vanilla. Pour over warm cake.

Recipe might be the same as this one:

http://allrecipes.com/recipe/23056/texas-sheet-cake-v/