Cook beans per package directions. When done, drain and reserve 1/4 cup bean cooking liquid. Heat oil in a heavy skillet and sauté the onions and garlic for 2 to 3 minutes. Add peppers and saute 5 minutes. Mash the beans with reserved bean liquid. Add all remaining ingredients to the skillet. Sauté 5 minutes, mixing frequently until hot.
Per serving - 41 calories, 3 g fat (28% calories from fat), 5 g protein, 14 g carbohydrate, 6 g fiber, 0 mg cholesterol, 103 mg sodium