Ingredients:

1/2 Cup Butter, softened

1/4 Cup Light Brown Sugar

1 Egg, separated

1 Cup All Purpose Flour

½ - 2 cups Nuts, chopped 

Jelly or Jam.

Instructions:

Cream the butter and sugar, until light and fluffy.   Add egg yolk and mix until smooth and creamy.  Add flour and mix until all the flour is mixed in.  Scoop 1 Tablespoon portions and roll into balls.  Dip the cookie balls into the egg white then roll them in the chopped nuts. 

Place the cookies on a cookie sheet 1 inch apart.  Make an indent with your thumb in the center of the cookie.  Bake in 350-degree oven for 5 minutes remove from oven and re-indent the centers again if necessary.  Bake for 10 -12 minutes more.  Allow cookies to cool then fill the center with your favorite Jam or Jelly.