In a food processor, puree the beans, red onion, garlic, lime juice, water, cumin, and cayenne pepper until smooth. Transfer the dip to a small serving bowl. Sprinkle with red onion and cilantro to garnish, if desired. Serve with tortilla chips, whole wheat crackers or vegetables.
Serving size: 3 tablespoons Calories: 70 calories, Fat: 1 gram, Saturated fat: 0 grams, Carbohydrates: 12 grams, Sugar: 0.5 grams, Sodium: 10 milligrams, Fiber: 4 grams, Protein: 4 grams, Cholesterol: 0 milligrams