Lunchroom Ladies Brownies-50 year old recipe

Ingredients:
1 cup butter
1/2 cup cocoa
2 cup flour
2 cup sugar
4 eggs
4 tsp vanilla
1 cup chopped nuts
Directions :
Mix ingredients then pour in 9 x 13 pan
Bake 20-25 minutes at 350 degrees
Check at 20 mins
Icing:
1/4 cup softened butter
¼ cup can milk (regular milk is fine)
1/4 cup cocoa
3 cups powdered sugar
dash salt
Mix together & frost Brownies.