Heat oven to 350 degrees F. Coat a large covered casserole with nonstick cooking spray.
Heat oil in a large nonstick skillet over medium-high heat. Add the pork and sausage and cook 5 minutes, turning halfway through cooking time.
In prepared casserole, stir together the beans, tomato sauce, chipotle, half of the cilantro, the pork and sausage. Bake, covered, for 30 minutes. Uncover and bake for an additional 30 to 40 minutes, until thickened.
Allow to cool slightly and garnish with remaining cilantro.