Thimble Cookies
["1 c. sifted flour", "1/2 c. butter", "1/4 c. sugar", "1 egg, separated", "1 tsp. vanilla", "nuts, finely chopped", "jelly or jam (raspberry jam is good)"]
["Cream butter and", "sugar", "until", "smooth.", "Add beaten egg yolk, flavoring and flour.", "Shape into small balls the size of a small walnut.", "Dip", "in egg white and then into nuts.", "Place on greased cookie sheet.", "Make a dent in dough with a thimble or something similar.", "Bake", "in 350\u00b0 oven for 5 minutes, take out", "and", "dent again.", "Bake", "approximately", "12", "minutes more. Remove from oven and fill dent with jam while hot."]
["flour", "butter", "sugar", "egg", "vanilla", "nuts"]