One Bowl Brownie
["4 sq. Baker's unsweetened chocolate", "3/4 c. (1 1/2 sticks) margarine or butter", "2 c. sugar", "3 eggs", "1 tsp. vanilla", "1 c. flour", "1 1/2 c. chopped Diamond walnuts"]
["Heat oven to 350\u00b0 (325\u00b0 for glass baking dish).", "Microwave chocolate and margarine in large microwaveable bowl on High 2 minutes or until margarine is melted.", "Stir until chocolate is completely melted."]
["chocolate", "margarine", "sugar", "eggs", "vanilla", "flour", "walnuts"]