Soft Pumpkin Snickerdoodles with Cinnamon Sugar (Soft and Chewy)

Ingredients

• 1/2 cup (113 g) unsalted butter, melted and cooled
• 1/2 cup (105 g) packed light brown sugar
• 1/3 cup (65 g) granulated sugar
• 1/3 cup (80 g) pumpkin puree, blotted thick from about 1/2 cup
• 1 teaspoon vanilla extract
• 1 3/4 cups (220 g) all-purpose flour, spooned and leveled
• 1 teaspoon pumpkin pie spice
• 1 teaspoon ground cinnamon
• 1/2 teaspoon cream of tartar
• 1/2 teaspoon baking soda
• 1/2 teaspoon fine salt
• 1/4 cup (50 g) granulated sugar
• 1 1/2 teaspoons ground cinnamon