1 c. butter
1/4 c. cocoa
1 c. water
2 c. flour
2 c. sugar
1/2 tsp. baking soda
1/4 tsp. salt
1/2 c. sour cream
1 tsp. vanilla
2 eggs

Mix the first 3 ingredients and bring to boil. Mix together in another bowl the next 4 ingredients; mix all together. To this mixture, add 1/2 cup sour cream, 1 teaspoon vanilla and 2 eggs (unbeaten); mix and pour into greased sheet pan. Bake 15 to 20 minutes at 350°F. Don't overbake.

FROSTING FOR THE TEXAS SHEET CAKE:

1/2 c. butter
1/4 c. cocoa
5 tbsp. milk

Bring to a boil and pour over 2 cups powdered sugar. Add 1 teaspoon of vanilla; beat and frost cake while still warm (add crushed walnuts to frosting, if desired).