I found this recipe on Allrecipes.com. It was so easy and tasted great. I served this with Roasted Brussel Sprouts and Potatoes.
2 10.5 ounce cans condensed Cream of Mushroom soup
1 1ounce package dry onion soup mix
1 1/4 cans of water (I used Beef Broth instead)
5 pound beef roast (I used a tri-tip roast)
Coat roast with flour, salt and pepper and brown on all sides. Mix all ingredients in crock pot and add roast covering with mixture. Cover and cook on High for 3-4 hours or Low for 6-8 hours. I used a little cornstarch at the end to thicken gravy.