If using dry beans...Soak over night and then add all the ingredients in the crockpot in the AM cook on low the whole day.
For those who use canned (which I do). I just do it on the stove in my cast iron dutch oven.
Sautee 1-2 onions in butter until caramelized
Add 1 diced red pepper and sauté until cooked.
Add in 3 cans of black beans
2-3 tbs of cumin
1-2 tbs of thyme
2-3 cloves of garlic
3 cups of beef stock
1 bay leaf
Simmer all for 2 hours until starting to thicken.
Serve over cooked brown rice (I cook mine in beef stock in my rice cooker). I serve with hot salsa, more diced onions and LOTS of sour cream.