Vanilla Bean Sugar Cookies

Recipe printed from Jenn's Food Journey, adapted from Andrea the Kitchen Witch

1 1/4 cup granulated sugar (I used vanilla sugar)
2 sticks (1 cup) unsalted butter, softened
2 egg yolks
1 Tablespoon vanilla extract
1 vanilla bean, split and scraped
2 1/2 cups all purpose flour
1/2 teaspoon cream of tartar
1 teaspoon baking soda
1/4 teaspoon salt
1/4 cup granulated sugar (for rolling)

Cream the butter and sugar together in a stand mixer with the paddle attachment until very light and fluffy, about 5 minutes on medium speed.

Scrape down the sides and add the vanilla and vanilla bean. Mix until incorporated. Add the egg yolks one at a time, beating well between each addition and scraping sides of bowl and paddle after each addition.

Mix the flour, baking soda, cream of tartar and salt together in a bowl. Slowly add the dry ingredients to the wet ingredients, scraping down the sides after each addition.

Preheat the oven to 350 degrees. Scoop balls of dough and roll into sugar, coating all sides. Place balls of dough on cookie sheet and bake for 11 minutes or until just set. You do not want these to brown, brown means they will not be soft and chewy in the middle. Let cool on cookie sheet for 2 minutes and then move to wire rack to finish cooling. Enjoy!