One Bowl Brownies
["4 sq. unsweetened chocolate (Baker's, etc.)", "3/4 c. margarine or butter", "2 c. sugar", "3 eggs", "1 tsp. vanilla", "1 c. flour", "1 1/2 c. chopped walnuts (optional)"]
["Heat oven to 350\u00b0 (325\u00b0 for glass). Microwave chocolate and margarine in large bowl on High for 2 minutes or until melted. Stir until chocolate is completely melted. Stir sugar into chocolate until well blended. Mix in eggs and vanilla. Stir in flour and walnuts until well blended.", "Spread in greased 13 x 9-inch baking dish. Bake 30 to 35 minutes. Do not overbake. Cool in pan. Cut into squares."]
["unsweetened chocolate", "margarine", "sugar", "eggs", "vanilla", "flour", "walnuts"]