Strawberry Squares
["1 c. flour", "1/4 c. brown sugar, packed", "1/2 c. chopped walnuts", "1/2 c. melted butter", "2 egg whites", "3/4 c. sugar", "1 (10 oz.) frozen strawberries", "2 Tbsp. lemon juice", "1 c. Cool Whip"]
["Stir together the flour, brown sugar, walnuts and butter. Spread evenly in a 9 x 13 x 2-inch baking pan.", "Bake at 350\u00b0 for 20 minutes, stirring occasionally.", "Remove from oven and cool."]
["flour", "brown sugar", "walnuts", "butter", "egg whites", "sugar", "frozen strawberries", "lemon juice"]