Leftover mashed potatoes are almost always a disappointment—they lose their fluffy texture when reheated. You can, however, repurpose them by mixing in eggs, buttermilk, and flour to make a waffle batter. You could keep the waffles simple, but you'll be far better off throwing in scallions, cheddar, and bacon.

My grandmother made great broccoli casserole. She gave me her recipe. And I lost it. Every Thanksgiving I try to turn back time with a new one.