Preheat oven to 425F. Prepare pie pan with bottom crust. Arrange peeled and sliced apples in pie pan, mounding the apples slightly.
Melt butter in a saucepan over medium heat. Stir in gluten-free flour, mixing well. Add water, xylitol, and coconut sugar. Bring to a boil. Reduce heat and let simmer until thickened.
Pour thickened liquid over apples in pie pan. Cover with top pie crust. Add slits to the pie crust to allow steam through.
Cover edges of pie crust with foil. Bake for 15 minutes at 425F. Reduce heat to 350F and continue baking for 40-50 minutes, until apples are soft. In the last 15 minutes of baking, remove foil.
Allow to cool (approx. 2 hours) before slicing.
Notes
Adapted from AllRecipes.Place the pie pan on a cookie sheet lined with foil during baking to aid in cleanup.