1. Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

2. In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.

3. In a large mixing bowl, cream together the softened butter and sugar until light and fluffy.

4. Beat in the egg and vanilla extract until well combined. Add a few drops of green food coloring to achieve your desired shade of green.

5. Gradually add the dry ingredients to the wet ingredients, mixing until a dough forms.

6. Roll the dough into small balls and place them on the prepared baking sheet. Flatten each ball slightly with the bottom of a glass.

7. Bake the cookies in the preheated oven for 10–12 minutes, or until the edges are lightly golden. Let cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.

8. Once the cookies are completely cooled, decorate them with festive sprinkles or decorative sugar for a fun and colorful touch.

9. Serve and enjoy!