Heat vegetable oil in 4-quart saucepan over high heat. Add onion, bell pepper and garlic; cook until tender, about 5 minutes, stirring occasionally.
Stir in black beans, tomatoes (and their liquid), vegetable broth, TABASCO® Sauce, cumin and salt. Heat mixture to boiling over high heat. Reduce heat to low; cover and simmer 15 minutes, stirring occasionally.
Serve with sour cream, if desired.
Makes 6 servings.