Casseroles are a healthy addition to your holiday dinner table and are great for making ahead before the big day. Our healthy recipes for gratins, green bean casserole, sweet potato casserole, stuffing and more easy holiday casserole recipes are delicious side dishes to complement your main course holiday meal. Try our Pear & Red Onion Gratin for festive casserole or Meringue-Topped Sweet Potato Casserole for a lightened-up version of this traditional casserole recipe for the holidays.