Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
In a small bowl, whisk together the flour, baking soda, and salt.
In a large mixing bowl, cream the softened butter, brown sugar, and granulated sugar until light and fluffy.
Add the vanilla extract and egg, mixing until well combined.
Gradually add the dry ingredients to the wet mixture, stirring until just combined.
Fold in the mini chocolate chips.
Using a teaspoon, scoop small amounts of dough and place them on the prepared baking sheet, spacing them about 2 inches apart.
Bake for 8-10 minutes, or until the edges are lightly golden.
Remove from the oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.