Preheat your oven to 350°F (175°C). Line baking sheets with parchment paper if desired.
In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
In a large mixing bowl, cream together the softened butter and brown sugar until light and fluffy.
Add the maple syrup, vanilla extract, and egg to the butter-sugar mixture. Mix until well combined.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
In a small bowl, place the granulated sugar for rolling.
Use a tablespoon or cookie scoop to portion out the cookie dough. Roll each ball in the granulated sugar to coat.
Place the sugar-coated dough balls on the prepared baking sheets, spacing them about 2 inches apart.
Bake in the preheated oven for 10-12 minutes, or until the edges are golden but the centers look slightly underbaked.
Remove from the oven and let them cool on the baking sheets for about 5 minutes before transferring them to a cooling rack to cool completely.