Butter Cookies - cooking recipe

Ingredients

1/2 c. butter
1/2 c. sugar
1 c. flour
1 egg yolk
1 tsp. vanilla
pinch of salt

Preparation

Soften butter to room temperature and mix in other ingredients.
Pinch off small pieces, roll into balls and place on cookie sheet.
Make a small dent in center and fill with a dot of jelly.
Bake at 350\u00b0 about 20 minutes.