1. Preheat the oven:

Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper or lightly grease them.

2. Prepare the dry ingredients: 

In a small bowl, whisk together the flour, baking soda, ground cinnamon, and salt. Set aside.

3. Cream the butter and sugar:  

In a large mixing bowl, use a hand mixer or stand mixer to cream together the softened butter and sugar until light and fluffy (about 2-3 minutes).

4. Add the egg and vanilla:  

Beat in the egg and vanilla extract until fully combined. The mixture should look smooth.

5. Combine the dry and wet ingredients: 

Gradually add the dry ingredient mixture to the wet ingredients. Mix until just combined. Be careful not to overmix.

6. Form the cookie dough balls: 

Roll the dough into 1-inch balls. Set aside.

7. Make the cinnamon-sugar coating:  

In a small bowl, combine the 2 tbsp of sugar with 1 tsp of cinnamon.

8. Roll the dough balls: 

Roll each dough ball into the cinnamon-sugar mixture, making sure the dough is fully coated.

9. Bake the cookies: 

Place the dough balls on the prepared baking sheets about 2 inches apart. Bake for 8-10 minutes or until the edges are golden and the centers are slightly soft. The cookies will continue to firm up as they cool.

10. Cool the cookies:  

Allow the cookies to cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.