I make this in about a 4qt. size slow cooker.
Fill the cooker with water to pre-soak beans.
Check/sort about 1/2 pound of pinto beans. At some point you Will
find a small pebble, it's better to find it now than break a tooth on it!
Soak these beans for 8 hours ( overnight ).
Drain and discard the water, or not. Some people will use it to
cook other things with, I don't.

You now have your 1/2 pounds of soaked "Fat" beans.
Refill the slow cooker with water leaving an 1in or 2in of space
for extra ingredients.
To this water add one Knorr tomato/chicken soup cube.
Add one small smoked turkey leg, This is why you leave
the 1 or 2 in of space.
You could add any type of meat you like , Spam, Ham Shank ( more meaty than hocks ) sausage etc. I got a deal on the turkey legs so
I use those.
Add 1/2 Onion chopped up or 1/2 tbs of Onion flakes.
turn your cooker on and 6 hours later you have dinner.
If you don't want it quite so soupy then mix up 1 tbs of
corn starch in 1/2 cup of cold water and stir it into the
finished beans. 10 min later it will thicken up to a gravy.

I serve this with buttered bread.
I put a slice of b. bread in a bowl and top it with a big scoop of bean soup.
I sometimes also add instant rice to soak up the soup or I will
leave the bread out and pour the soup over plain cooked rice.

Total prep time is about 10 min. of actual work.