It feels equally appropriate at a fancy restaurant, and at dinner with the family. Cauliflower gratin is a creamy, cheesy veggie dish that deserves a spot in your dinner side repertoire. Sally Humeniuk with Cache Valley Creamery shared her recipe. You’ve probably heard of (or tasted) potatoes au gratin, and this cauliflower version is just as delicious. This cheesy cauliflower casserole is loaded with multiple types of cheese. Topped with a sprinkle of thyme, it’s an impressive side to any meal. Sally says you can even add some broccoli for a more colorful casserole.