2 (10.75 ounce) cans condensed cream of mushroom soup
1 (1 ounce) package dry onion soup mix
1 1/4 cups water
5 1/2 pounds pot roast
In a slow cooker, mix cream of mushroom soup, dry onion soup mix and water. Place pot roast in slow cooker and coat with soup mixture. Add vegetables if desired and add salt and pepper to taste.
Cook on High setting for 4-5 hours, or on Low setting for 8 to 9 hours.