Preheat oven to 350F. Line a baking sheet with parchment paper or a silicone baking mat.

In a medium-sized bowl add flour, baking powder, cream of tartar, and salt and mix.

In a large bowl add butter and sugar and mix (cream) until it reaches fluffy texture (2-3 minutes)

Next, add eggs and vanilla extract and mix (scraping down the sides of the bowl as needed)

Add flour mixture and mix until combined.

In s small bowl combine sugar and cinnamon.

Use a cookie scoop to form a ball. Use both hands to smoothly round each cookie ball.

Toss each cookie dough ball in the cinnamon-sugar mixture to evenly coat. Place the cookie dough ball on the baking sheet (2 inches apart). May need to cook in batches will extend the total time of making these cookies.

Bake in the oven for 10-12 minutes.

Remove the cookies from the oven and allow cookies to cool for 5 minutes and transfer to a wire rack to completely cool.