• Preheat oven to 350℉. Gather the ingredients so that you have everything close at hand on the counter or table. Place parchment paper or silicone baking mats on two baking sheets.

Prepare the Ingredients

• Carefully separate the egg whites from the egg yolks and place each in separate containers.
• Get out the decorating sprinkles and arrange in small prep bowls, if desired.

Make the Cookie Dough

• In a small bowl, sift together the all-purpose flour, baking soda and cream of tartar.
• Using a large mixing bowl, cream together the softened butter and granulated sugar until fluffy, about 60-90 seconds.
• Add in the egg yolks one at a time. Mix in the vanilla extract.
• Gradually add the flour mixture to the creamed butter, beating well after each addition, and scraping down the sides of the bowl, as needed.

Shape and Bake Cookie Dough

• Shape the dough using a tablespoon or cookie scoop, 1 oz or bigger, rolling dough in the palm of your hands to form balls.
• Generously dip the tops of the balls into sugar sprinkles. Place balls 2 inches apart on prepared baking pans. Do NOT flatten.
• Bake in preheated oven for 12-14 minutes or until cookies are lightly golden around the edges.
• Remove from oven and cool on baking racks. Cookies will crinkle as they cool.
• This recipe will make approximately 36 cookies. Store cookies in a tightly covered container for 2-3 days, or freeze in plastic freezer bags for up to 3 months.