I like
4# rolled rump roast
1 can cream of chicken soup
1 can milk
1 envelope Lipton's onion soup
I put this in the crockpot before bed, frozen.
Add the other ingredients and cook on low overnight
In the morning, add 1# baby carrots and potatoes for however many people you will feed. Then I turn it on high for a noon meal.
This makes a good gravy. Sometimes I'll take the gravy out and thicken it and sometimes not.
I watch for the roast to go on sale. Sometimes less than hamburger.
This has been Sun. dinner for years.