Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy. Add in the egg and vanilla extract, mixing until well combined.

In another bowl, whisk together the flour, baking soda, salt, and ground cinnamon.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.

In a small bowl, mix together the granulated sugar, brown sugar and ground cinnamon.

Roll the dough into small balls (about 1 inch in diameter, use ice scooper if you prefer) and then roll each ball in the cinnamon sugar mixture, ensuring they are well coated.

Place the coated dough balls on the prepared baking sheet about 2 inches apart. Bake in the preheated oven for about 10-12 minutes or until the edges are slightly golden.

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

Serve the cookies warm or store them in an airtight container for later.