Pumpkin Spice Snickerdoodles

Ingredients (13)

• 1 stick unsalted butter, softened
• 1/2 cup white granulated sugar
• 1/3 cup light brown sugar, packed
• 1/4 cup pumpkin purée
• 1 large egg yolk
• 3/4 teaspoon vanilla extract
• 1 1/2 cups all-purpose flour
• 3/4 teaspoon pumpkin pie spice
• 1/2 teaspoon baking soda
• 1/4 teaspoon cream of tartar
• 1/4 teaspoon salt
• 1/4 cup white granulated sugar
• 2 teaspoons pumpkin pie spice