Turn off the stove. Sprinkle 1/8 tsp xanthan gum
on top and allow the sauce to thicken. It will take 5-10 minutes for the sauce to thicken just a bit. It will still be a bit broth-y as you don't want it to thicken too much. You can also omit the xanthan gum as it does not change the taste of the dish.