Lunchbox Brownies
["1/2 c. butter", "3/4 c. shortening", "3/4 c. cocoa", "2 c. sugar", "4 eggs, beaten", "1 tsp. vanilla", "1 1/2 c. flour", "1 tsp. baking powder", "1 tsp. salt", "1 c. chopped nuts"]
["Melt butter and shortening in large saucepan over low heat. Stir in cocoa.", "Combine flour, baking powder and salt; stir in chocolate mixture.", "Add nuts and mix well.", "Spread in well-greased 13 x 9 x 2-inch baking pan.", "Bake at 350\u00b0 for 30 to 35 minutes. Spread frosting while brownies are still warm."]
["butter", "shortening", "cocoa", "sugar", "eggs", "vanilla", "flour", "baking powder", "salt", "nuts"]