Mediterranean Baked Halibut is a fresh and light dish that brings the flavors of the sea right to your table. With tender, flaky halibut fillets baked alongside vibrant tomatoes, olives, garlic, and a sprinkle of fresh herbs, this dish feels like a little taste of sunshine. The combination of juicy fish and Mediterranean ingredients makes it both simple and satisfying.
I love how easy this recipe is to put together, yet it looks so impressive when you serve it. One of my favorite parts is how the fish stays perfectly moist while soaking up all those beautiful flavors from the tomatoes and olives. I usually like to add a bit of lemon juice on top before baking to give it a bright, zesty kick.
This dish goes perfectly with a side of rice or crusty bread to soak up the delicious juices. Whenever I make it for friends, they always ask for the recipe because it’s not only healthy but tastes like you spent hours in the kitchen. It’s a great way to enjoy a peaceful, Mediterranean-inspired meal any night of the week.
Key Ingredients & Substitutions
Halibut Fillets: Halibut is great because it’s firm and holds up well while baking. If you can’t find halibut, cod or sea bass work well too. Just check they are firm and thick pieces.
Tomatoes: Cherry or grape tomatoes add sweetness and a burst of flavor. You can also use diced Roma tomatoes if that’s what you have. They will soften nicely and blend with the herbs.
Green Beans: Fresh green beans bring a nice crunch and color contrast. You could swap them with asparagus or zucchini slices for a different twist.
Herbs & Spices: Fresh parsley and oregano give the dish a bright Mediterranean flavor. Use dried if fresh isn’t available, but reduce the amount slightly to avoid overpowering.
Lemon Juice: Lemon brightens the whole dish. If fresh lemons aren’t ready to hand, bottled lemon juice works in a pinch, but fresh is best for that zesty punch.
How Do You Make Sure the Halibut Stays Moist and Flaky When Baking?
Baking fish perfectly can be tricky because it can dry out quickly. Here’s how to get tender, flaky halibut every time:
- Preheat your oven well so the fish starts cooking evenly right away.
- Use a baking dish and place the fish on top of veggies — they help keep moisture around the fish.
- Drizzle lemon juice and olive oil over the fish before baking. This keeps it juicy and adds flavor.
- Check the fish after 15 minutes. When it flakes easily with a fork but still looks moist, it’s done.
- Don’t overbake! Fish cooks quickly, so keeping an eye on timing is key.
By following these steps, your halibut will stay tender and soak up all the lovely Mediterranean flavors from the sauce below.

Equipment You’ll Need
- Baking dish – I recommend a medium-sized one to fit the fillets and veggies comfortably, so everything cooks evenly.
- Mixing bowl – for tossing the tomatoes, green beans, garlic, onion, herbs, and oil together without mess.
- Knife and chopping board – for chopping herbs, onion, and garlic quickly and safely.
- Measuring spoons and cups – to ensure the right amount of oil, lemon juice, and herbs.
- Oven – to bake the fish evenly and bring all the flavors together beautifully.
Flavor Variations & Add-Ins
- Swap the protein: Try shrimp or cod instead of halibut for a different seafood twist.
- Cheese boost: Sprinkle crumbled feta or Parmesan on top before baking for extra savory flavor.
- Extra veggies: Add sliced bell peppers, zucchini, or artichoke hearts to make it more colorful and filling.
- Spice it up: Mix in a pinch of cumin or smoked paprika for a warm, smoky flavor variation.
Mediterranean Baked Halibut
Ingredients You’ll Need:
- 4 halibut fillets (about 6 oz each)
- 1 pint cherry or grape tomatoes, halved
- 1 cup fresh green beans, trimmed and cut in half
- 3 cloves garlic, minced
- 1 small onion, finely chopped
- 3 tbsp olive oil, divided
- 2 tbsp fresh parsley, chopped
- 1 tbsp fresh oregano or 1 tsp dried oregano
- 1 tsp dried basil
- 1/2 tsp crushed red pepper flakes (optional)
- Salt and freshly ground black pepper, to taste
- Juice of 1 lemon
- Fresh parsley for garnish
How Much Time Will You Need?
This recipe takes about 10 minutes to prepare and 15-20 minutes to bake, making it a quick and easy meal you can enjoy any day. In under 30 minutes, you’ll have a tasty Mediterranean dish ready to serve!
Step-by-Step Instructions:
1. Preheat and Prepare the Veggies:
Start by heating your oven to 400°F (200°C). In a mixing bowl, toss together the halved cherry tomatoes, green beans, minced garlic, chopped onion, 2 tablespoons of olive oil, parsley, oregano, basil, crushed red pepper flakes, salt, and pepper until everything is evenly coated with herbs and oil.
2. Arrange in Baking Dish:
Lightly grease your baking dish with the remaining tablespoon of olive oil. Spread the vegetable and tomato mixture evenly at the bottom of the dish to create a flavorful bed for the fish.
3. Add Halibut and Season:
Place the halibut fillets on top of the vegetables. Drizzle the lemon juice over the fillets, season each one with a bit more salt and pepper, and sprinkle with some fresh parsley.
4. Bake and Serve:
Bake uncovered for 15 to 20 minutes, or until the halibut turns opaque and flakes easily when tested with a fork. Once done, spoon some of the cooked tomato and herb mixture over the fish. Garnish with extra parsley and serve right away with crusty bread or rice to catch all the lovely juices.
Can I Use Frozen Halibut for This Recipe?
Yes! Just be sure to fully thaw the halibut in the refrigerator overnight before cooking. Pat it dry with paper towels to remove excess moisture, which helps the fish bake evenly and prevents it from steaming.
Can I Make This Dish Ahead of Time?
You can prep the tomato and green bean mixture a few hours ahead and keep it refrigerated. Add the fish and bake just before serving to keep the halibut fresh and tender.
How Should I Store Leftovers?
Store leftover halibut and veggies in an airtight container in the fridge for up to 2 days. Reheat gently in the oven or microwave to keep the fish moist.
What Are Good Side Dishes for Mediterranean Baked Halibut?
This dish pairs wonderfully with crusty bread, steamed rice, or a simple green salad to balance the flavors and soak up the delicious juices.