Homemade Brownies
["2 sticks butter", "4 eggs", "2 c. sugar", "1/2 c. Hershey's cocoa", "1 1/2 c. flour", "1 Tbsp. vanilla", "1 tsp. baking powder", "1 1/2 c. halved or chopped walnuts (optional)"]
["Melt butter and let it cool.", "Add beaten eggs, sugar, cocoa, flour, vanilla and baking powder.", "Mix well with a wooden spoon; do not use an electric mixer.", "Bake at 350\u00b0 in 9 x 13-inch greased and lightly floured pan for 25 minutes or until tops are firm. Top with chocolate frosting and 1 cup finely chopped walnuts."]
["butter", "eggs", "sugar", "cocoa", "flour", "vanilla", "baking powder", "walnuts"]