Spicy Black Bean Soup with Polenta Croutons Author: Andrea Beaman Prep time: 10 mins Cook time: 20 mins Total time: 30 mins Serves: 4-6 servings Ingredients 1 tablespoon olive oil 1 large onion, peeled and diced 3 garlic cloves, peeled and minced 1½ teaspoon cumin 2 carrots, diced 3 celery stalks, diced 1 red bell