Introducing a delightful and comforting Squash Casserole that's perfect for any meal of the day! This versatile dish, ready in just 75 minutes, is a fantastic way to enjoy the flavors of sweet and savory yellow squash. The casserole is a harmonious blend of creamy mayonnaise, rich Cheddar and Parmesan cheeses, and a crispy breadcrumb topping, all complemented by the subtle sweetness of finely chopped onions and the aromatic freshness of basil. Whether you're serving it as a side dish, a hearty main course, or even a satisfying lunch, this casserole is sure to impress. Its rich flavor profile and generous portion sizes make it an ideal recipe for family gatherings or cozy dinners at home. Get ready to indulge in a comforting and delicious culinary experience that will become a favorite in your household!