Step 1: Preheat and Prepare
Set your oven to 375°F (190°C). Line baking sheets with parchment paper or silicone mats to prevent sticking and promote even baking.

Step 2: Mix Dry Ingredients
In a medium bowl, whisk together the flour, cream of tartar, baking soda, and salt. For dietary modifications, use appropriate gluten-free flours or adjust leavening agents.

Step 3: Cream Butter and Sugar
In a large bowl, beat softened butter and granulated sugar on medium-high speed until fluffy and light, approximately 4 to 5 minutes. This aeration ensures a tender crumb.

Step 4: Incorporate Eggs
Add eggs one at a time (or flax eggs for vegan), blending well after each addition to bind the dough evenly.

Step 5: Combine Wet and Dry Ingredients
Slowly add the dry mixture to the wet, mixing on low speed until just combined. Overmixing may lead to a tougher texture, so mix gently.

Step 6: Prepare Cinnamon-Sugar Coating
In a small bowl, combine sugar and cinnamon to coat the cookie dough balls.

Step 7: Shape and Coat Cookies
Scoop dough into balls approximately 1 to 1.5 tablespoons in size (25-35 grams). Roll the balls twice in the cinnamon-sugar mixture for a full coating, then place them spaced 2-3 inches apart on the baking sheets.

Step 8: Bake
Bake for 9-11 minutes or until the edges are lightly golden and the centers are soft but set. For a crinkled edge effect, some recipes recommend baking 6 minutes, tapping the tray, then baking another 4-5 minutes.

Step 9: Cool
Allow cookies to cool on the baking sheet for several minutes before transferring them to a wire rack to cool completely. This resting helps finish the chewy texture.