Brownies
["1 c. melted butter", "8 Tbsp. cocoa", "2 c. sugar", "4 eggs", "1 c. flour", "1 c. nuts (optional)"]
["Bake in a 9 x 13-inch greased pan in a 350\u00b0 oven for about 30 minutes."]
["butter", "cocoa", "sugar", "eggs", "flour", "nuts"]