In a large pot, heat the oil over medium heat. Add the onion and cook, stirring occasionally, until soft, about 5 minutes. Add the garlic and cook for 2 minutes longer. Add the remaining ingredients and cook, uncovered, stirring occasionally, until thickened, about 30 minutes. Season with salt and pepper, to taste.
Per serving: Calories 94; Total Fat 3 grams; Saturated Fat 0.3 grams; Protein 3 grams; Total Carbohydrate 14 grams; Fiber 3 grams; Cholesterol 0 milligrams; Sodium 476 milligrams