Brownie Sheet Cake - cooking recipe

Ingredients

1/2 c. oil
1 stick butter
1 c. water
4 Tbsp. cocoa
2 c. self-rising flour
2 c. sugar
1 tsp. soda
1/2 c. buttermilk
2 well beaten eggs
1 tsp. vanilla
1 stick butter
4 Tbsp. cocoa
6 Tbsp. milk
1 box powdered sugar
1 tsp. vanilla
1 c. chopped nuts (optional)

Preparation

Bring to a boil the oil, 1 stick butter, water and 4 tablespoons cocoa.
Have ready flour, sugar and soda.
Pour the boiled mixture over the dry mixture; mix quickly.
Add buttermilk, eggs and 1 teaspoon vanilla.
Pour in a sheet cake pan, 11 x 16 inches.
Bake for 20 minutes at 400\u00b0.