Polish Teacakes - cooking recipe

Ingredients

1/2 c. butter
1 egg yolk, slightly beaten
1/2 tsp. salt
1/2 c. sugar
1 c. flour
1/2 tsp. vanilla

Preparation

Cream butter and sugar until light.
Add egg yolk; mix well. Add flour and salt; mix.
Roll dough in small balls; dip in unbeaten egg white.
Roll in finely chopped nuts.
Place on buttered baking sheet; press down center of each with thimble. Bake in a 325\u00b0 oven for 5 minutes.
Remove; press down again with thimble.
Return to oven for about 10 to 15 minutes.
Remove from oven; fill indents with preserves while hot.