2/3 c. butter
1/3 c. granulated sugar
2 egg yolks
1 tsp. vanilla
1/2 tsp. salt
1 1/2 c. sifted flour

Cream together butter and granulated sugar until fluffy. Add egg yolks, vanilla, and salt and beat well. Gradually add sifted flour, mixing well. Shape into 3/4" balls. Dip in 2 slightly beaten egg whites. Roll in 3/4 cup of finely chopped walnuts. Place 1" apart on greased cookie sheet. Press down center of each with thumb.

Bake 15 to 17 minutes. Cool slightly. Remove from pan and cool on rack. Fill centers with cherry or strawberry preserves. Makes 3 dozen.