Ingredients

• 1.25 cups white sugar
• 1 cup butter
• 3 eggs yolks
• 1 teaspoon vanilla extract
• 2.5 cups all-purpose flour
• 1 teaspoon baking soda
• 0.5 teaspoons cream of tartar

Instructions

1. 1 Preheat oven to 350 degrees F (180 degrees C). Lightly grease 2 cookie sheets.
2. 2 Cream together sugar and butter. Beat in egg yolks and vanilla.
3. 3 Add flour, baking soda, and cream of tartar. Stir.
4. 4 Form dough into walnut size balls and place 2 inches apart on cookie sheet. Don't flatten. Bake 10 to 11 minutes, until tops are cracked and just turning color.

Nutrition per serving