Heat butter in a heavy skillet
Dredge pork chops in half the flour
Fry pork chops on one side, then flip
Add sliced onions to skillet with the pork chops
Season with Salt and Pepper
Remove Pork Chops and Onions to a platter
Add water to the skillet and stir
Mix 1-2 Tbsp flour with 1/4+ cup milk, making a smooth paste
Bring water to a boil
Slowly add the flour/milk paste, stirring until thickened
Add more water or milk if gravy becomes too thick
Put pork chops, onions, and gravy into ovenware.
Bake at 250 for 3-4 hours