Preheat your oven to 375°F (190°C). In a medium bowl, whisk together the flour, baking powder, and salt.
In a large bowl, cream the butter and sugar until light and fluffy. Beat in the egg and vanilla until well combined. Gradually add the dry ingredients to the wet ingredients, mixing just until a dough forms. Chill the dough for at least 30 minutes.
When ready to bake, roll the dough out to 1/4-inch thickness on a lightly floured surface. Cut out shapes using Thanksgiving-themed cookie cutters and arrange the cookies on parchment-lined baking sheets.
Bake for 8-10 minutes, or until the edges are lightly golden. Allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely.
Decorate as desired with royal icing, sprinkles, or a dusting of cinnamon-sugar.
To reduce the caloric content, you can experiment with ingredient alternatives like using less butter or replacing some of the all-purpose flour with whole wheat flour.Be cautious with portion sizes, as it's easy to overindulge in these tasty cookies.