This comforting dish is the perfect sidekick for your turkey. With lots of fall vegetables in one dish, it’s a great make-ahead and a welcome alternative entree for vegetarians.
Prepare casserole, but don’t sprinkle bread-crumb mixture overtop. Store topping in resealable plastic bag. Cover casserole and refrigerate both overnight. When ready to bake, remove casserole from refrigerator and leave at room temperature, 1 hour. Preheat oven to 375F (190C). Evenly sprinkle bread-crumb mixture overtop vegetables. Cover pan tightly with foil and bake 45 to 50 minutes, then remove foil. Continue baking until vegetables are fork-tender and topping is golden, 15 to 20 minutes.