2 (15 ounce) ounce cans black beans
2 cups pur?d tomatoes
2 to 3 cups chicken or vegetable broth or water
1 onion, chopped
1 teaspoon minced garlic
3 teaspoons chili powder
1 teaspoon Mexican oregano
1/2 teaspoon ground cumin
1/2 teaspoon salt, or to taste
Freshly ground pepper, to taste

In a large pot, combine beans with all ingredients except salt and pepper. Cover and simmer for 1 hour.

Season to taste. Serve with salsa, chopped onions and grated cheese, if desired.