Czeck Cookies

Directions

1. 1
   Cream butter, gradually adding sugar.
2. 2
   Beat until light and fluffy.
3. 3
   Add egg yolks.
4. 4
   Blend well.
5. 5
   Gradually add flour and mix well.
6. 6
   Fold in nuts.
7. 7
   Pat half of batter into greased 8-inch square pan.
8. 8
   Spread with filling.
9. 9
   Cover with remaining batter. Bake 1 hour at 325°.
10. 10
    Cool and cut into 1-inch squares.