Directions
Preheat the oven to 350 degrees Fahrenheit. Line baking sheets with parchment paper. In a large bowl, beat the softened butter and sugar until light and creamy. Add the egg and vanilla extract and mix until smooth. In a separate bowl, whisk together the flour, baking powder, and salt. Gradually add the dry ingredients to the butter mixture and mix until a soft dough forms. Roll the dough into small balls and coat each ball with the coarse sugar. Arrange them on the prepared baking sheets and flatten them slightly. Bake for 9 to 11 minutes until the edges are lightly golden. Cool for 5 minutes before transferring to a rack.