01 - Preheat the oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together flour, baking soda, salt, cinnamon, nutmeg, and oats. Set aside.
03 - In a large bowl, beat softened butter with brown and granulated sugars until light and fluffy, about 2 to 3 minutes.
04 - Add eggs one at a time, beating well after each addition. Stir in peppermint and vanilla extracts.
05 - Gradually mix dry ingredients into wet mixture until just combined.
06 - Gently fold in raisins, crushed peppermint candies, and white chocolate chips if using.
07 - Scoop tablespoon-sized portions of dough onto prepared baking sheets, spacing about 2 inches apart.
08 - Bake for 10 to 12 minutes or until edges turn golden and centers are set.
09 - Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.