Jam Thumbprints Cookies

A 2/3 C butter or margarine
B 1/3 C sugar
beat A & B till fluffy
Add:
2 egg yolks
1 t vanilla
1/2 t salt
beat well; gradually add
1.5 C sifted flour; mix well

Shape into 3/4" balls - dip in slightly beaten egg whites - roll in
sugar that has been mixed with some brown sugar and cinnamon and
coconut (can use nuts if desired).

Place on greased cookie sheet - press down centers - bake 15-17
minutes, cool slightly - remove from sheet - fill when completely
cooled with preserves. Makes 2 dozen.