Brownies - cooking recipe

Ingredients

1 c. butter (must be butter)
2 c. sugar
4 eggs
1/3 c. cocoa
1 1/2 c. flour
1 tsp. vanilla

Preparation

Pour into 9 x 13-inch prepared pan and bake in 350\u00b0 oven for about 30 minutes (it may take a little longer).