Butter Cookies

This is a recipe to make French butter cookies.
I was amazed that you use a hard cooked egg yolk,
in place of a fresh yolk in the cookie dough batter.
These are nice and crispy with a good butter flavor.

Ingredients:
10 tablespoons unsalted butter
1/3 cup sugar
1 hard cooked egg yolk, minced
1 teaspoon vanilla extract
1 1/2 cups flour
1/2 teaspoon salt
1 egg white for brushing
sugar for dusting.

Directions:
Cream butter and sugar in a mixing bowl,
add hard cooked egg yolk, salt, vanilla and flour.
Mix to combine well, remove from bowl and
roll onto a log then wrap in parchment paper.
Refrigerate for 1 hour.
Preheat oven to 375 degrees F.
Remove dough from refrigerator, unwrap
and cut into 1/4 inch slices.
Place slices on a baking sheet and brush top
with egg white and sprinkle top with sugar.
Bake for 10-12 minutes or until golden brown.