Preheat your oven to 375 degrees.
Line two baking sheets with parchment paper. Set aside.
In the bowl of your stand mixer place the brown sugar, butter and egg. Beat until blended. Add the flour, xanthan gum, cinnamon, nutmeg, salt and baking soda. Beat until blended together.
Add the apple chunks and blend until just combined.
Using a cookie scoop or heaping tablespoon place 12 cookies on each cookie sheet.
Bake at 375 degrees for 10-12 minutes until the cookies are golden brown.
Let them cool slightly before removing from the baking sheet to a cooling rack.
Store in an air tight container for up to five days on your countertop.
