Toffee Topped Bars
["2 cups firmly packed brown sugar", "2 cups all purpose flour", "1/2 cup (1 stick) butter of margarine, softened", "1 tsp. baking powder", "1/2 tsp. salt", "1 tsp. vanilla extract", "1 cup milk", "1 egg", "1 cup semi-sweet chocolate chips", "1/2 cup chopped walnuts", "1/4 cup unsweetened flaked coconut (optional)"]
["Preheat oven to 350 degrees.", "Lightly grease 13 x 9 inch baking pan.", "In large bowl, mix together the brown sugar and flour.", "Use a pastry cutter or 2 knives to cut butter into mixture until it is course crumbs.", "Remove 1 cup of mixture, set aside."]
["brown sugar", "flour", "butter", "baking powder", "salt", "vanilla extract", "milk", "egg", "semi-sweet chocolate chips", "walnuts", "coconut"]