Set the oven to bake or convection and allow it to begin warming up as you get the rest of your ingredients together. Hake is a delicate fish that doesn’t take long to cook through, so it’s best to use a moderate temperature to prevent it from getting too done. Baking hake highlights the fish’s natural flavor without contributing unnecessary calories. Make sure the skin side is facing down so that the meat is visible. Drizzle a small amount of olive oil over the fillets to keep them from sticking.The foil will trap in moisture, preventing the hake from drying out in the heat of the oven.  Make sure the foil you're using can go in the oven safely. Leave the top of the foil open for now in case you decide to thrown in a few herbs, spices, or vegetables for steaming. Sprinkle the hake with kosher salt, black pepper, lemon zest, or other spices to taste. If you want, you can also add pungent vegetables or herbs to each packet. The fish will absorb the flavors of the other components as it cooks, giving a little more depth. Onions, garlic, capers, and herbs like parsley and dill are all popular companions for baked hake. Once you’ve seasoned the hake, seal up each of the packet to ensure that they'll hold in heat. Enclosing the fillets in foil will also keep any liquid from leaking out while they're baking, which means juicier fish and faster cleanup. Avoid wrapping the fish too tight. This could mash it and ruin its natural texture. Leave 2–3 inches (5.1–7.6 cm) of space between them for the heat to circulate. You should be able to fit at least half a dozen average-sized fillets on a single baking sheet. If you're preparing enough for a crowd, you might need to pull out a second sheet or do your baking in batches. If you're worried about the foil sticking, brush the surface of the baking sheet with a light coating of oil before laying out the packets. Slide the baking sheet onto the center rack. Then, set a timer to remind you to check the fish’s progress after the first 10 minutes. If the fillets look like they need a little more time, pop them back into the oven for 2-3 minutes.  When properly cooked, the meat should be white and flaky, and give way easily under a fork. Be careful not to overcook the hake. Since it has such a light consistency, it can go from done to overdone in a matter of minutes. Plate the fillets alongside a mound of rice pilaf or quinoa and a colorful tossed salad. For a heartier meal, try pairing the fish with steamed seasonal veggies, red potato salad, or corn on the cob. Garnish with a lemon wedge or sprig of parsley and enjoy!  Make condiments like tartar sauce or lemon butter available for diners who prefer to dress up their fish.  Put away your leftovers in an airtight container in the refrigerator. When properly stored, cooked fish should last 3-4 days.
Preheat the oven to 350 °F (177 °C). Wrap each fillet in a sheet of aluminium foil. Season the fillets. Fold or twist the ends of the foil closed. Arrange the wrapped fillets on a large baking sheet. Place the hake in the oven for 10-12 minutes. Serve oven-baked hake with your favorite sides.