Forget about old side dishes with this delicious chayote gratin! A healthy recipe fit for the keto diet, this flavorful chayote gratin is a yielding dish that can also work as a main! Prepared with sour cream, requesón, spinach, chayote, zucchini, and Mozzarella and Parmesan cheese, this creamy chayote gratin is a wholesome recipe you must include in your regular rotation.