Oat-Coated Mackerel is a delicious and healthy dish that combines the rich flavors of mackerel with the nutty crunch of oats. The mackerel fillets are coated in a mixture of oats, herbs, and spices, then baked to perfection. This recipe is not only easy to make but also packed with nutrients, including omega-3 fatty acids. Serve the oat-coated mackerel with a side of roasted vegetables or a fresh salad for a complete and satisfying meal.