Sautee onions, pepper, and garlic in a skillet over medium-high heat with butter. Let cook for about 5 minutes or until tender then add ingredients to the crockpot.
Using the same skillet cook your meat until brown. Once cooked add the meat to the crockpot.
Roughly chop your greens and add. If using kale tare the thick stems off of the leaves before chopping.
Add tomatoes, black beans, and spices. I used dried black beans, soaking and cooking them beforehand but you can use also use a can of black beans.
Stir the contents of the crockpot well and set on low for 8-10 hours or high for 4 hours.
Top with sliced kalamata olives and a scoop of plain full-fat yogurt if you tolerate dairy.