Grandmas Brownies

1 1/2 cups basic cookie mix
1 1/2 cups sugar
7 tablespoons cocoa powder
1/2 teaspoon baking powder
3 eggs
3 tablespoons oil
1 teaspoon vanilla
1/2 cup chopped nuts

Stir together mix, sugar, cocoa powder and baking powder. Add eggs oil and vanilla. Mix well. Add nuts. Spread in greased 8x12 pan. Bake at 350 degrees for 20-25 minutes. Sprinkle with powdered sugar.

2019 update: use 1/2 cup of cocoa powder and add chocolate chips