Toll House Marble Squares
["1/2 c. softened butter", "6 Tbsp. sugar", "6 Tbsp. brown sugar", "1/2 tsp. vanilla", "1/4 tsp. water", "1 egg", "1 c. + 2 Tbsp. sifted flour", "1/2 tsp. baking soda", "1/2 tsp. salt", "1/2 c. chopped California walnuts", "1 (6 oz.) pkg. Nestle semi-sweet chocolate morsels"]
["Cream together the butter, sugar, brown sugar, vanilla and water.", "Beat in the egg.", "Mix in flour, baking soda and salt.", "Add walnuts; spread mixture in greased 13 x 9 x 2-inch pan.", "Sprinkle chocolate morsels over top.", "Bake at 375\u00b0 for 1 minute.", "Run knife blade through to marbleize.", "Bake 12 to 14 minutes longer.", "Makes 24 squares."]
["butter", "sugar", "brown sugar", "vanilla", "water", "egg", "+", "baking soda", "salt", "California walnuts", "semi-sweet chocolate morsels"]