Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.

In a large mixing bowl, cream together the softened butter, granulated sugar, brown sugar, and maple syrup until light and fluffy.

Add the eggs and vanilla extract to the butter mixture and mix until well incorporated.

In a separate bowl, combine the flour, cream of tartar, baking soda, and salt. Gradually add the dry ingredients to the wet mixture, mixing until just combined.

In a small bowl, mix together the cinnamon and 1/4 cup granulated sugar for rolling.

Scoop out tablespoon-sized portions of dough and roll them into balls. Roll each ball in the cinnamon-sugar mixture until fully coated.

Place the coated dough balls on the prepared baking sheets, spacing them about 2 inches apart.

Bake in the preheated oven for 10-12 minutes, or until the edges are lightly golden. The centers may appear slightly soft but will firm up as they cool.

Remove from the oven and let the cookies cool on the baking sheets for a few minutes before transferring to wire racks to cool completely.