I do this quite frequently it is super easy and makes great meat. I have started with my meat frozen and thawed. If you start with thawed meat it will cook faster. It is a great feeling to prepare the food in the morning knowing that supper will be ready and waiting.
I put onions, potatoes and carrots in the bottom, meat on top.
Make sure you season your meat well. Choose a marinade, if you have my cookbook there are two in there. Then pour your marinade over the top.
Cook low and slow….8-10 hours.
I used beef chuck roast, but you could use venison or pork.
Also, this can usually make for multiple meals, at least two. I usually use the roast for one meal and then make Beefy Noodes, Teriyaki Beef or Beef Stew.