Fudge Brownies
["1/4 c. margarine or butter", "1 (6 oz.) pkg. semi-sweet chocolate chips", "3/4 c. sugar", "2/3 c. all-purpose flour", "1/2 tsp. vanilla", "1/4 tsp. baking powder", "1/4 tsp. salt", "2 eggs", "1/2 c. chopped nuts (optional)", "1/2 c. semi-sweet chocolate chips (optional)"]
["Heat oven to 350\u00b0.", "Grease bottom only of a square pan (8 x 8 x 2-inches) with shortening.", "Heat margarine and 1 package chocolate chips in a 2-quart saucepan over low heat, stirring constantly, until melted.", "Remove from heat.", "Stir in remaining ingredients except nuts and 1/2 cup chocolate chips real hard with a wooden spoon until smooth.", "Stir in nuts and chocolate chips. Spread in pan with a rubber spatula.", "Bake until the center is set, about 30 minutes.", "Cool completely; cut into 1 3/4 x 1 1/2-inch brownies.", "Store brownies tightly covered.", "Makes 20 brownies."]
["margarine", "semi-sweet chocolate chips", "sugar", "all-purpose", "vanilla", "baking powder", "salt", "eggs", "nuts", "semi-sweet chocolate chips"]