Put roast into roaster or stoneware
Season with Salt and Pepper
Place sliced onion on top
Pour water over all
Cover with lid
Put into 400-degree pre-heated oven for 15-20 minutes
Turn oven down to 250-275 and continue to bake for 3-4 more hours until roast is tender
GRAVY: Separate broth from beef roast.
Mix flour and milk together until you have a thin paste
Bring beef broth to a boil
Slowly pour the flour/milk paste into the boiling broth - stirring while you pour
Turn burner down to simmer and allow gravy to thicken
If gravy is too thin, make and add some more paste
Season to taste