1. Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper.
2. In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
3. In a large bowl, cream the softened butter and brown sugar together until light and fluffy, about 3-4 minutes. This step is key for that perfect cookie texture.
4. Beat in the egg, vanilla extract, and cinnamon until well combined.
5. Gradually add the dry ingredients to the wet mixture, mixing until just combined. Be careful not to overmix, as this can make the cookies tough.
6. Using a tablespoon, scoop the dough and place it onto the prepared baking sheets, leaving about 2 inches between each cookie.
7. Bake for 10-12 minutes, or until the edges are golden brown. Remember, the cookies will continue to cook on the baking sheet after being removed from the oven.
8. While the cookies are cooling, mix the powdered sugar, milk, and cinnamon in a small bowl to create the glaze.
9. Once the cookies have cooled slightly, drizzle the glaze over the tops for a sweet finish.

These cookies are truly a labor of love, and I promise you, they’re worth every step. The smell alone will have your family coming to see what’s cooking!