Mabel'S Cookies
["1 c. butter or margarine", "1 c. brown sugar", "1 egg", "3 c. flour", "1 tsp. baking soda, in 1/4 c. warm water", "1 tsp. vanilla", "jelly or jam (your choice)"]
["Form small balls; roll in brown sugar.", "Depress small hole with finger; put in small amount of jelly or jam of your choice. Bake at 375\u00b0 for 12 to 15 minutes."]
["butter", "brown sugar", "egg", "flour", "baking soda", "vanilla"]