Pillsbury's Thumbprint Cookies - Daddy's Favorite

Of all the cookies in the world, Daddy's favorite are the Thumbprint Cookies.  He likes them best with fruit preserves.  He could eat a million of them!

Thumbprint Cookies

3 1/2 dzn cookies (unless Jennifer makes the cookies and then it is like 30 cookies)

Ingredients
1/2 cup sugar
1 cup margarine or butter softened
1 tsp vanilla
2 egg yolks
2 1/4 cups All-Purpose flour
1 tsp baking powder
1/4 cup jam

1. Beat sugar, margarine, vanilla, and egg yolks until light and fluffy.
2. Gradually add flour and baking powder and mix well.
3. Cover with plastic wrap and refrigerate for 30 minutes for easier handling.
4. Heat oven to 350 degrees F. 
5. Shape dough into 1 inch balls and place 2 inches apart on ungreased cookie sheets. With thumb, make imprint in the center of each cookie. 
6. Bake at 350 degrees for 11-14 minutes or until light golden brown around edges.
7. Top with jelly and allow to cool completely.