Add the oil, onions, garlic, and bell pepper to a warm pan.
Saute on medium for about 5 mins.
Next add the beans and the spices to the pan, stir and cover.
Cook on medium heat for 10-15 minutes.
While the food is cooking, prep your toppings and tortillas and make the avocado crema.
Once everything is cooked through, assemble your tacos.