I just wanted to add this...just because.
I make refried beans in the crock pot all the time because it makes it easy and I don't have to go and cook them on the stove. Using the stove requires that I am THERE all the time, and I tend to be moving all day with everything going on here.
I put in six cups of well rinses pinto or black beans in the crock, cover them with water about two inches up off the beans and let them cook in the crock pot overnight on low. They swell and get a little soft...in the morning I turn it up to high and let them cook for maybe four to six hours. Overcooking them is not an issue.
When *I* am ready to make the beans I take a little stick blender and blend up the beans right in the crock to refried bean consistency...then add dried minced onions, chili powder, green chilies, salt, pepper and some olive oil. Then I let them cook on low for a couple hours...and I have very low work refried beans and I don't have to use the stove.
The nice thing about refried beans is that you can season them however you want...you can add whatever oil (or lard) to it, as well. Serve it in a bowl like stew, on chips, in burritos or with rice and other beans. They freeze well, but will also keep in the fridge for a few days.
I made a pot of them yesterday and my husband ate most of them already. I know that this is probably a regional staple of the southwest...but maybe everyone else would like them, as well.