Some may call it cheating because I use a lot of help from the store, but I call it an efficient use of time that results in a GREAT meal

1 pot roast, trimmed of visible fat. We use an arm roast because it is inexpensive
1 small bag of baby carrots
1 large onion, chopped
2 medium potatoes, diced
1 can Campbell's chunky potato soup, any variety
1 can Coca Cola
1 envelope Lipton Onion Soup Mix

Dump carrots, potatoes, and onions in the bottom of a 4-5 quart slow cooker. Add in potato soup and stir until the veggies are evenly coated. Place pot roast on top of the veggies and pour the onion soup mix on top of the meat. Pour a can of Coke on top of the veggies around the meat.
Cover and cook on low for 2-3 hours and on high for 4 hours. Or on low ALL day.

It is SO easy and turns out so tender and juicy that it is hard to lift the meat out of the crock pot without shredding it to pieces.