Oven roasted halibut with burst tomatoes checks all of the boxes: gluten-free, keto-friendly, and healthy. All it takes is one pan to prepare, and you’ll have a perfectly crispy on-the-outside, tender on-the-inside baked fish dinner.

Roasted halibut with burst tomatoes and a simple basil pesto will remind you of your favorite restaurant’s best seafood dish. You know the dish. It’s the one with the beautiful piece of perfectly cooked fish, and the blistered veggies, and the simple cooked-in-its-own juice sauce spooned over the top.

This easy, healthy fish recipe takes just 30 minutes to cook and can be on the table in no time. Searing the halibut in the pan first to create a crispy outside and then roasting it in the oven with the tomatoes to finish prevents overcooking and allows the fish to continue cooking right in the juice of the sweet cherry tomatoes. Top it with fresh basil pesto and a squeeze of lemon for the most amazing weeknight dinner. 

What is halibut?

Chefs love working with halibut. This “barn door” sized fish lives in the northernmost part of the Pacific ocean, and is one of the most sustainable and versatile types of fish you can purchase. Halibut can be roasted, sautéed, boiled, and grilled! Halibut has a mild, “non-fishy” flavor that works great with so many ingredients and sauces – especially fresh veggies. 

How to Make

1. Preheat the oven to 300 degrees F.
2. Season the halibut with salt and pepper.
3. Heat an oven-safe skillet over medium-high heat, and sear the halibut on one side for 2 minutes. Transfer the fish to a plate.
4. Add tomatoes, garlic, and salt, and cook for 4 to 5 minutes. You will know the tomatoes are done when they begin to burst.
5. Return the halibut to the pan with the seared side facing up.
6. Bake for 10 to 15 minutes
7. Squeeze the lemon over the dish, and spoon the pesto over the halibut.

Ingredients

• Halibut filets – To pick a good halibut filet, look for fish that has a uniform white sheen to it. Avoid filets that look yellow or dried out, as these may be past peak freshness. 
• Olive oil – You can use extra virgin olive oil or virgin olive oil to help maintain the fish’s moisture while it bakes. 
• Cherry tomatoes – Cherry tomatoes have an amazing “pop” of juice when you bite into them. They’re also just a little sweet, and that sweetness is wonderful with the other savory flavors. Purchase a carton of gold cherry tomatoes and a carton of red for a fun rainbow look. 
• Garlic, Kosher salt – Cooking the minced garlic and salt together with the tomatoes brings all of the flavors together. 
• Lemon – When you add lemon juice to roasted halibut, it lightens up the fish with its acidity.
• Basil pesto – Just a few spoonfuls of fresh basil pesto makes this easy weeknight dinner sing.

Variations

• Add greens – Toss greens like curly kale, Swiss chard, or spinach in with the halibut before roasting for more healthy green veggies. 
• Try a different fish – Pan-searing and then roasting is a cooking method that works with so many types of white fish. Try substituting halibut with cod, snapper, flounder, or sole.  

FAQs

More Easy Seafood Recipes

Ina Garten’s Roasted Shrimp

Salmon and Edamame Soba Noodles

Lemongrass Roasted Salmon

Salmon Satay with Peanut Sauce

SaveSave