2 (10.75 oz.) cans condensed cream of mushroom soup
1 (1 oz.) pkg. dry onion soup mix
1 1/4 c. water
5 1/2 lb. pot roast
1 pkg. brown gravy mix

In a slow cooker, mix cream of mushroom soup, dry onion soup mix, brown gravy mix and water. Place pot roast in slow cooker and coat with soup mixture. Cook on high setting for 3 to 4 hours or on low setting for 8 to 9 hours.