1Spray 5- to 6-quart slow cooker with cooking spray. In slow cooker, mix broth, tomatoes, lima beans, onions, carrots, garlic, salt and pepper.
2Cover; cook on Low heat setting 6 hours. Stir in pasta, zucchini and yellow squash. Cover; cook 1 hour longer or until vegetables are tender. Top individual servings with pesto and cheese.