Prep Time 15 minutes mins
Cook Time 40 minutes mins
Resting Time 5 minutes mins
Total Time 1 hour hr
For the crispiest top, preheat a sheet pan in the oven and assemble the casserole on it to help crisp the bottom layer of tots, or par-bake the tots for 10 minutes before topping the casserole. Use rotisserie chicken to save time, or swap in cooked turkey or leftover roast chicken. If using raw vegetables instead of frozen, sauté them briefly to remove excess moisture. You can substitute cream of mushroom soup for a deeper flavor or make a quick homemade sauce with 2 tablespoons butter, 2 tablespoons flour, and 1 cup broth plus 1/2 cup milk. Season to taste after baking, as saltiness varies with soup and cheese. For freezer prep, assemble up to step 6, wrap tightly, freeze up to 2 months, and bake from frozen at 375°F for 60–70 minutes, covering with foil if browning too fast.