I mixed white rice with corn, broccoli, onion, and tomatoes. I added milk and vegetable broth to keep it moist while the cheese got melty in the oven.
I used fontina and cheddar alllll over the top and I mixed some in the casserole itself because you can never have too much cheese.
Annnnd we ate the entire thing. Yep. All of it. Despite how badly I wanted to take it for lunch the next day.