Casseroles get a bad rep for being sad and boring. If you’re someone who holds that opinion, this dish will definitely change your mind. We’ve layered fluffy spaghetti squash, shredded heirloom chicken breast from Cook’s Venture, tomatoes, onions, mushrooms, and spinach into a flavorful Mediterranean lasagna. We finish the dish off with a side of zesty, chili-flaked broccoli florets for a pop of healthy crunch and color.