3-4 lb pot roast (chuck, bottom round, rump, etc.)
1 pkg Lipton Onion Soup Mix
1 can cream of mushroom soup
12 oz can of Pepsi
1 onion, chopped (optional)
2 carrots, chopped (optional)
2 jars of mushrooms, drained (optional)

Put roast in the crock pot and add optional veggies. Mix onion soup mix, cream of mushroom soup and pepsi together and pour over roast. Cook on low heat for 9 hours.

I know it sounds disgusting, but the proof is in the finished product...delicious!