Heat the oil in a dutch oven over medium-high heat.
Add the onion, bell pepper, mushrooms and garlic. Cook, stirring often, until tender, 4 to 6 minutes.
Add the turkey and cook, breaking up with a spoon, until no longer pink, approximately 5 minutes.
Stir in the tomato paste, cumin, and chili pepper. Cook, stirring, for 1 minute.
Add the tomatoes and their juices, beans, 1 cup water, 1-¼ teaspoons salt, and ¼ teaspoon pepper.
Bring to a boil.
Reduce heat, cover and simmer, stirring occasionally, until slightly thickened, 15-20 minutes.
Serve with optional toppings: cheese, sour cream, etc.