2
Bean hole pinto beans
This is a method that can be used for a number of dishes. It will turn your Dutch oven into a pressure cooker at first and as the time goes on, into a slow cooker. I have used it to cook a number of things, most notable, beans and pot roast.
From what I understand, this is a native American method where they used earthen clay pots and was adapted by early European settlers using cast iron. The basic concept is to dig a hole, built large fire and when down to coals, add pot and bury. Let set between 3 and 16 hours.
Not that I have experienced it personally, but IIRC this is a method used for New England baked beans
I used pintos soaked overnight.
For a 12 inch DO, dig hole about 2 feet deep and 2 feet across. It will depend on the size of your DO, jut leave room on sides for coals.
Attached Image

Start large fire in hole
Attached Image

Prepare food in DO. In this case, as I said, we used pintos with dice onions and a mix of Tex-Mex spices. This is less about the recipe, and more about method. Use whatever recipe for beans that you have.
Attached Image

When fire has burn down to coals, and the hole is about half filled
Attached Image

Shovel out a little more than half the coals
Attached Image

Place pot in hole ans level as possible.
Attached Image

Attached Image

Place coals back in hole making sure to get the sides filled in and a good layer on top, then fill in will all the dirt for the hole. you should end up with a mound.
Attached Image

Let sit for about 8 hours. This pot was in the hole for about 7.5 hours. Carefully dig out of hole, things will be hot. Try to keep the dirt out of the pot

Attached Image

Attached Image

While you build a large fire in the beginning, over all you will use only a fraction of the wood you would need to cook them in a normal method. The earth heats up while the fire is going and when all is buried, the thermal retention cooks everything.
Hope yall give this a try. Let us know how it turns out of you. Good luck.