Vegan Red Lentil and Black Bean Stuffed Peppers 1 cup red lentils 4 medium bell peppers ½ tbsp oil 1 small onion, diced 1 cup vegetable broth 1 tsp cumin ½ tsp chilli powder Salt & pepper to taste 1 (14 oz.) can black beans, drained & rinsed Add 2 cups of water to the lentils and let them sit overnight.