This lemony salmon and orzo casserole is a one-dish dinner that's packed with omega-3 fatty acids—a polyunsaturated fat in salmon that can help tame inflammation and may even help lower blood pressure. Here, omega-3-rich salmon sits on top of an orzo mixture that bakes in the oven, instead of boiling on the stovetop, absorbing all the bright and lemony flavors while it cooks.