1/2 c. butter
1/4 c. brown sugar
1 egg, separated from yolk
1/4 tsp. salt
2/3 c. chopped walnuts
Jelly

Mix butter, sugar, egg yolk, and vanilla. Add flour and salt. Preheat oven to 350 degrees. Beat egg white. Roll dough into balls, use 1 teaspoon of dough. Roll balls into egg white and then in nuts. Press with thumb. Bake 10 to 20 minutes. Cool on wire rack. Fill with jelly.