Special Fudge Cake
["2 sticks butter", "2 c. sugar", "1 c. flour", "1 tsp. baking powder", "4 eggs", "4 oz. Baker's unsweetened chocolate square", "1 tsp. vanilla", "2 c. chopped nuts"]
["Melt chocolate with butter and sugar in double boiler; mix well.", "Allow to cool.", "Beat eggs and add with flour, vanilla, nuts and baking powder.", "Pour into greased pan, 12 1/2 x 8 3/4 x 2-inches or sheet cake pan.", "Bake 25 minutes at 375\u00b0.", "Cool before icing."]
["butter", "sugar", "flour", "baking powder", "eggs", "chocolate square", "vanilla", "nuts"]