To begin, heat the oven to 400 degrees Fahrenheit. Get a cookie sheet, preferably a darker one, and line it with a silicone baking mat or parchment paper.

In a medium-sized bowl, mix together the flour, cream of tartar, baking soda, and salt. Keep it aside.

Put the butter and 1 1/2 cups of sugar in a big mixing bowl and mix until it becomes pale in color and has a soft, airy texture, which should take around 2-3 minutes.

To incorporate the eggs into the mixture, add them individually, ensuring they are fully combined after each addition. If necessary, use a spatula to scrape any residue from the edges of the bowl.

Include the vanilla extract and blend until thoroughly mixed.

Combine the dry ingredients and mix them together.

In a separate small bowl, mix together the cinnamon and the remaining 3 tablespoons of sugar.

Form cookie dough into balls measuring one tablespoon each.

Take each ball of cookie dough and coat it evenly with the mixture of cinnamon sugar. After that, place the coated dough on the cookie sheet that has been prepared in advance, making sure to leave approximately 2 inches of space between each ball.

Bake for 6-8 minutes.

Take the cookies out of the oven and let them rest for 2-3 minutes, then transfer them to a cooling rack.

Store cookies in an airtight container.