Think baking sheets are just for cookies? Think again. With these healthy one-pan dinner recipes, you can make a stir-fry in the oven or roast chicken with Brussels sprouts. You'll need one or two rimmed baking sheets (the rim corrals the food when you stir everything), but in a pinch a metal 9-by-13-inch pan will work just fine. Crank up the oven and heat up the sheets: it's time to re-imagine quick dinners.