Scalloped Potatoes and Pork Casserole

This is very easy to assemble and it makes for a nice, homey, hearty meal.  Enjoy!
-2 Tbs salted butter, divided
-2 1/2 lbs pork chops, boneless
-salt and pepper
-1 small onion, finely chopped
-2 lbs potatoes, peeled and thinly sliced
-1 (14.5 oz) can cream of mushroom soup
-1 1/4 cups milk
Preheat oven to 350 F.  Lightly grease bottom of 9x13 baking dish.  Set aside.
Heat 1 Tbs of the butter in large skillet.  Season pork chops with salt and pepper on each side.  Quickly brown on both sides in the melted butter.  Pork will not be cooked through at this point, just nicely browned.  Remove form skillet onto plate and set aside.
Return skillet to stove and add the other Tbs of butter.  Add the chopped onion and season with some salt and butter.  Cook for about 5 minutes until soft.  Stir in the soup and milk.  Mix well until no lumps.  Simmer for a few minutes, until sauce thickens.
While that simmers, place sliced potatoes on bottom of prepared baking dish.  Top with the browned pork chops.  Once done simmering, add the sauce to the dish, making sure that all the chops and potatoes are covered.
Cover with foil and bake in preheated oven for 30 minutes.  Remove foil and bake for 30 more minutes.
Remove casserole from oven and let it stand for 10 minutes before serving.  Enjoy!