The Best Brownies EVER! Lunchroom Ladies 50 year old recipe.

Name: The Best Brownies EVER! Lunchroom Ladies 50 year old recipe.
Ingredients: 1 cup butter; 1/2 cup cocoa; 2 cup flour ( use self rising flour); 2 cup sugar; 4 eggs; 4 tsp vanilla; 1 c chopped nuts (optional)