Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a large bowl, cream the softened butter and granulated sugar together until light and fluffy.
Beat in the egg and vanilla extract until well combined.
In a separate bowl, whisk together the flour, baking powder, and salt.
Gradually add the dry ingredients to the butter mixture, mixing until just combined.
Roll the dough into 1-inch balls and place them on the prepared baking sheet. Flatten each ball slightly with the bottom of a glass or your hand. Decorate with colored sprinkles or coarse sugar if desired.
Bake for 12-15 minutes, or until the edges are lightly golden.
Allow cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.
Prep Time: 15 minutes | Cooking Time: 12-15 minutes | Total Time: 30 minutes | Servings: 24 cookies