Marcine'S Mexican Wedding Cakes(Swedish Cookies)  
["1 lb. butter, softened", "4 c. flour", "1 c. powdered sugar", "1 c. finely chopped nuts (pecans are best)", "1 tsp. vanilla"]
["Cream butter and powdered sugar. Add vanilla and mix well. Gradually add sifted flour and chopped nuts. Refrigerate mixture for at least 2 hours. Roll into small balls about the size of a walnut. Put on ungreased cookie sheet. Bake in preheated oven at 350 to 375\u00b0 for about 20 minutes. Roll in powdered sugar while still warm."]
["butter", "flour", "powdered sugar", "nuts", "vanilla"]