French Dip Sandwiches

2.5 - 3 lb beef roast (it can be frozen)
2 tbsp. olive oil
S & P
2 - 1oz. pkg dry onion soup mix
2 cups water
2 cans beef broth
6-8 large buns (french bread style)
white cheese, sliced (mozzarella, provolone or swiss)

Heat oil in skillet, rub roast with S&P.  When oil is hot, place roast in pan and sear on all sides.  Place in crock-pot and sprinkle with soup mix.  Pour water and beef broth over roast.  Cook 8-10 hours on high, 4-5 hours on low.  Shred with fork.  Place shredded meat on bun, put slice of cheese over meat.  Broil in oven until cheese is melty/golden.  Dip sandwich in remaining juices.