Slow Cooker Pork Chops with Mushrooms

1 onion
4 pork chops
salt and pepper
1 lb mushrooms (white, crimini, etc.)
1/4 c butter (1/2 of a stick)
1 T arrow root powder
3 cloves of garlic, minced
1/2 c cream
1 1/2 c milk
1 t dry sage
1/4 t dry thyme
1 t xanthan gum
salt and pepper

Slice the onion into rings or half-rings, and put it into the bottom of the slow cooker.
Season the pork chops with salt and pepper, and put them on top of the onion.
Slice the mushrooms, and put them on top of the pork chops.
Melt the butter in a saucepan.  Saute the garlic briefly.  Add the arrowroot powder and stir it until it is thick and bubbly.  Add the cream, milk and spices and cook, stirring occasionally until it comes to a boil.  Remove from the heat and whisk in the xanthan gum, being careful to break up any lumps.  Add salt and pepper to taste.
Pour the sauce over the mushrooms.
Set the slow cooker on high for 6 hours.

(I'll try to remember to take a picture when it's done.)