Beef Stew in Slow Cooker without sauce

2 lb boneless beef shoulder roast or possibly chuck roast 3 Tbsp. flour 1 Tbsp. extra virgin olive oil     Pam or possibly other nonstick cooking spray 1 lrg[...]

2 lbs beef roast , cubed into 1 in pieces 2 celery ribs , chopped 2 carrots , chopped 3 large potatoes , chopped 1 medium onion , chopped 4 -6 cups water 4 -6[...]