Katrina s Best-Ever Chocolate Brownies

6 tablespoons unsweetened cocoa powder

1 cup butter

1 cup white sugar

2 eggs

1 cup all-purpose flour

½ teaspoon baking powder

¼ teaspoon salt

¼ cup chopped walnuts

¼ teaspoon vanilla extract

Melt cocoa and butter or margarine over low heat. Transfer to mixing bowl, cream together. Add sugar gradually. Blend in eggs one at a time.

Sift together flour, baking powder and salt. Stir into chocolate mixture. Mix in nuts. Spread batter into a greased 8 inch square pan.

Bake at 350 degrees F (175 degrees C) for 20 - 25 minutes.