Preheat the oven to 350°F (175°C).

In a mixing bowl, whisk together the flour, baking soda, cinnamon, nutmeg, and salt.

In another bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy.

Beat in the egg and vanilla extract, then mix in the apple cider.

Gradually add the dry ingredients to the wet ingredients, mixing until just combined.

Fold in walnuts and raisins if using.

Drop tablespoon-sized amounts of dough onto a baking sheet lined with parchment paper.

Bake in the preheated oven for 10-12 minutes or until the edges are golden.

Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.