1 cup butter (room temperature)
1� cups granulated sugar
3 egg YOLKS
2 teaspoons vanilla extract
2� cups all purpose flour
1 teaspoon baking soda
� teaspoon cream of tartar
extra sugar to roll cookies in before baking
Cream 1 cup of butter with 1� cups of granulated sugar; add the egg yolks and vanilla and beat until smooth.
Add the flour, baking soda and cream of tartar, beat until smooth.
Form dough into balls (about the size of a small walnut) and roll in granulated sugar. Place on parchment lined cookie sheet (or sheet sprayed with cooking spray). DO NOT FLATTEN.
Bake at 350F for 10-11 minutes, or until tops are cracked and just starting to turn golden. Carefully remove to cooling rack. Makes 3 dozen.
NOTE: Due to egg yolk size differences (and therefore amount of liquid differences), if your cookie dough seems a little dry, mix in a tablespoon of water.