Preheat oven to 350°F (175°C). Line baking sheets with parchment paper.
Cream the butter and sugar in a stand mixer on medium-high for 1–2 minutes, until smooth and fluffy.
Add the egg, vanilla, and almond extract. Mix until incorporated. Scrape down the sides as needed.
Mix in baking powder, then gradually add the flour ½ cup at a time until a soft dough forms.
Roll dough out on a floured surface to ⅛–¼ inch thickness. Cut into desired shapes.
Bake for 6–8 minutes, just until edges start to set (not brown). Cool on the baking sheet before transferring to a rack.
Decorate with your favorite glaze or buttercream once fully cooled.