1. Preheat oven to 350ºF.
2. Cream together the butter or margarine and sugar.
3. Add vanilla
and eggs.
4. Mix cocoa and flour together and add to first mixture.
5. Add nuts.
6. Pour into
greased baking dish and bake for 20 to 25 minutes. I use a 9" X 13" pan.
7. Cool.
8. Cut into
squares.