Preheat oven to 375°F (191°C). Line a large baking sheet with parchment paper.
In a stand mixer with the paddle attachment, cream together butter, Redpath® Golden Yellow Sugar, and Redpath® Granulated Sugar until completely blended.
Add the egg and mix until fully incorporated into the butter mixture; about 1 minute.
Add vanilla extract and blend until thoroughly combined.
In a separate bowl, whisk together flour, baking powder, and salt. On low speed, add about half of the dry mixture to the bowl until just combined. Add the remaining flour. Do not overmix; mix until it forms a dough. Transfer dough onto a flat work surface and form the dough into a flat disc. Wrap dough in plastic wrap and chill in the fridge for 1 hour.
When ready to use, allow dough to come to room temperature; about 5 minutes.
Place dough between 2 sheets of parchment. Roll dough to a ¼-inch thickness. Using desired cookie cutter, cut out cookies. Scraps can be gathered and rerolled and cut. Transfer cookies onto prepared baking sheet. Place cookies into the fridge or freezer to chill before baking; about 10 minutes. Place cookies into the preheated oven for 10 to 12 minutes or until lightly golden in colour.
Cool for 5 minutes on the baking sheet. Transfer to a wire rack to cool completely.