Add all your ingredients in no particular order. Stir around a bit.
Turn the Crockpot on high and start cooking them for a full work day. I have let them cook for as long as 20 hours, starting on low and turning them up to high for the last 8 hours or so if that’s how the timing works out. I know it’s a little excessive, but they really are delicious and the smell of molasses filling your house is spectacular. Check them a few times, if the liquid has reduced too much, add a little water, if the beans seem close to ready and they’re too wet, take the lid off for a bit. Pull out the onion bits before serving.