Prepare the Dough: Whisk flour, baking powder, and salt in a bowl. In another bowl, beat butter and sugar until fluffy. Add egg, vanilla, and almond extract. Mix in dry ingredients until a soft dough forms.

Chill: Divide dough into two discs, wrap in plastic, and refrigerate for at least 1 hour.

Roll & Cut: Preheat oven to 350°F (175°C). Roll dough to ¼-inch thick on a floured surface. Cut into holiday shapes and place on parchment-lined baking sheets.

Bake: Bake for 8–10 minutes, until edges just begin to brown. Cool completely on a wire rack.

Make the Icing: Mix powdered sugar, 2 tablespoons milk, corn syrup, and extract. Adjust consistency with more milk or sugar.

Decorate: Divide icing into bowls, color as desired, and pipe or spread onto cooled cookies. Decorate with sprinkles before icing sets.