Black Walnut Brownie Bars - Hammons Black Walnuts

Ingredients

• 1/2 cup melted butter
• 1 cup granulated sugar
• 2 eggs
• 2/3 cup flour
• 2 Tbsp. unsweetened cocoa powder
• 1/2 tsp. baking powder
• 1/4 tsp. salt
• 1 tsp. vanilla
• 1 cup Hammons Black Walnuts