Calico Squash Casserole is a delicious and colorful dish made with a variety of summer squash. It is a perfect way to use up an abundance of squash from your garden or local farmers market. The casserole is creamy, cheesy, and packed with flavor. It is a great side dish for any meal and can even be served as a vegetarian main course. This recipe is easy to make and is sure to be a hit with your family and friends.