01 - Preheat oven to 350°F and line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking powder, and salt. Set aside.
03 - In a large bowl, cream the softened butter and 1 cup sugar until light and fluffy, approximately 2-3 minutes.
04 - Beat in the maple syrup, then add the egg and vanilla extract, mixing until smooth.
05 - Gradually add the dry ingredients to the wet mixture, mixing until just combined. Do not overmix.
06 - In a small bowl, combine the ¼ cup sugar and maple sugar for rolling.
07 - Scoop tablespoon-sized portions of dough and roll into balls. Roll each ball in the sugar mixture and place 2 inches apart on prepared baking sheets.
08 - Gently flatten each ball with the bottom of a glass.
09 - Bake for 11-13 minutes, or until the edges are just turning golden. The centers will still appear soft.
10 - Let cookies cool on the sheets for 5 minutes, then transfer to a wire rack to cool completely.