Remember when air fryers first hit the scene, promising to make all your fast-food dreams come true, only healthier and sans the frying? Fast forward a few years, and these countertop appliances are ubiquitous in home kitchens. They're not just for making guilt-free french fries anymore, though. They’ve become the kitchen appliance equivalent of a Swiss Army knife. They're helping home cooks whip up everything from crispy Brussels sprouts to juicy hamburgers and perfectly fluffy baked potatoes.