Butterscotch Lace Cookies
["1 c. butter or margarine, melted", "1 1/2 c. brown sugar, packed", "2 1/4 c. rolled oats", "1/2 tsp. salt", "1 Tbsp. molasses, if desired", "3 Tbsp. flour", "1 egg, slightly beaten", "1 tsp. vanilla"]
["Add sugar to butter; pour over rolled oats.", "Let stand at room temperature overnight so oats absorb butter."]
["butter", "brown sugar", "rolled oats", "salt", "molasses", "flour", "egg", "vanilla"]