These snickerdoodles are super chewy, soft, and fluffy. They stay chewy for days, and are perfect for gift-giving and making ahead for parties. Load them up with cinnamon chips, for an extra special treat.
In the bowl of a stand mixer, add butter, both sugars, and mix until light and fluffy. Add eggs and vanilla extract. Mix until fully combined.
In a separate bowl, add flour, cream of tartar, baking soda, and salt. Whisk together dry ingredients well.
Fold dry ingredients together with the wet ingredients, until fully incorporated. Add cinnamon chips, and fold to combine.
Cover cookie dough tightly, and chill for at least 30 minutes or until dough is cold.
Meanwhile, mix the 4 TB sugar and 4 tsp cinnamon in a small bowl, whisk together, and set aside.
Preheat oven to 350F. Line baking sheets with parchment paper.
Form 1-inch balls of cookie dough, roll the balls in cinnamon-sugar coating, and place 2 inches apart on parchment-lined baking sheets.
Bake about 8 minutes or just until bottoms of cookies are golden brown. Sprinkle tops with a bit more cinnamon sugar. Let cool on baking sheet for about 5 minutes. Transfer to cool completely on wire rack.
Notes
Make sure your butter is softened to room temperature, but not melty at all.
Roll your dough balls in the cinnamon-sugar coating just before baking, not earlier. This will keep the coating from absorbing too much moisture.
Be careful not to over-bake your cookies. They may still look a little underdone when you take them out of the oven, but they'll continue to cook as they cool. This is the key to achieving that chewy, soft texture.
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