To make these fantastic Peppermint Sugar Cookies, follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.
2. Combine Dry Ingredients: In a medium bowl, whisk together the flour, baking soda, baking powder, and salt. Set aside.
3. Cream Butter and Sugar: In a large bowl, beat the softened butter and granulated sugar together until light and fluffy using an electric mixer.
4. Add Egg and Extracts: Mix in the egg, vanilla extract, and peppermint extract until fully incorporated.
5. Gradually Add Dry Ingredients: Slowly add the dry mixture to the wet ingredients, mixing until just combined.
6. Chill the Dough: If time allows, cover the dough and chill in the refrigerator for about 30 minutes. This helps the cookies maintain their shape.
7. Shape the Cookies: Scoop tablespoon-sized portions of dough and roll into balls. Roll each ball in granulated sugar to coat.
8. Prepare to Bake: Place the sugar-coated cookie balls onto the prepared baking sheets, spacing them about 2 inches apart.
9. Add Peppermint Crumbles: Gently press a few crushed peppermint candies into the top of each cookie.
10. Bake: Place in the preheated oven and bake for 10-12 minutes or until the edges are lightly golden. The centers may look slightly underbaked, which is perfect for chewy cookies.
11. Cool: Allow the cookies to cool on the baking sheet for 5 minutes, then transfer them to a wire rack to cool completely.

These steps will guide you through creating these delightful cookies with ease.