Thumbprints

Directions

1. 1
   Cream butter and sugar until fluffy.
2. 2
   Add egg yolks, 1/2 teaspoon salt and vanilla.
3. 3
   Beat well.
4. 4
   Gradually add flour; mix well.
5. 5
   Shape into 3/4-inch balls, dip in egg whites and roll in nuts.
6. 6
   Place 1-inch apart on greased cookie sheet.
7. 7
   Press down centers with thumb; make a small well in each.
8. 8
   Bake at 350° for 15 minutes.
9. 9
   Cool and remove from pan.
10. 10
    Fill centers with preserves.