Peanut Butter Bars
["1/2 c. butter or margarine", "1/2 c. sugar", "1/2 c. brown sugar, firmly packed", "1 egg, unbeaten", "1/3 c. peanut butter", "1/2 tsp. soda", "1/4 tsp. salt", "1/2 tsp. vanilla", "1 c. all-purpose flour", "1 c. quick-cooking oats", "1 (6 oz.) pkg. chocolate chips", "1 c. powdered sugar", "1/4 c. peanut butter", "2 to 4 Tbsp. evaporated milk"]
["Cream butter or margarine and add sugar and brown sugar.", "Cream well.", "Blend in unbeaten egg, 1/3 cup peanut butter, soda, salt and vanilla.", "Sift in flour and oats."]
["butter", "sugar", "brown sugar", "egg", "peanut butter", "soda", "salt", "vanilla", "flour", "oats", "chocolate chips", "powdered sugar", "peanut butter", "milk"]