This side is a great candidate for making ahead of time. Cook the dish on the stovetop and transfer the mixture to a casserole dish. Sprinkle it with the Parmesan cheese and cover the dish with plastic wrap before storing in the refrigerator. When you are ready to bake it, bring it to room temperature while the oven preheats. Bake it for an additional 5 minutes or so to ensure the center is warmed through and the top is golden.