Preheat your oven to 350°F (175°C). Line your baking sheets with parchment paper or silicone baking mats.
In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy.
Add the egg and vanilla extract to the sugar mixture, mixing until well combined.
In a separate bowl, whisk together the flour, baking soda, baking powder, and salt.
Gradually add the dry ingredients to the wet mixture, stirring until just combined.
Using your hands or a cookie scoop, form the dough into balls (about 1 tablespoon each) and roll each ball in additional sugar to coat.
Place the dough balls onto the prepared baking sheets, spacing them about 2 inches apart.
Bake in the preheated oven for 8-10 minutes, or until the edges are lightly golden and the tops have crinkled.
Remove from the oven and allow the cookies to cool on the baking sheets for 5 minutes before transferring to a cooling rack to cool completely.