This Oven-Baked Garlic Butter Halibut with Lemon and Thyme is an elegant yet incredibly easy seafood recipe featuring thick, tender halibut fillets baked in a rich garlic butter sauce with fresh lemon, aromatic thyme, and a splash of white wine.
The halibut becomes beautifully flaky and moist while the melted butter, garlic, and lemon create a flavorful sauce that enhances the fish’s naturally mild, delicate taste.
Perfect for busy weeknights, family dinners, romantic evenings, or special occasions, this baked halibut recipe requires just a handful of ingredients and is ready in approximately 25 minutes.
Prep Time
10 minutes
Cook Time
12–15 minutes
Total Time
About 25 minutes
Servings
4
Why You’ll Love This Garlic Butter Halibut Recipe
Halibut is a firm, mild white fish that works beautifully with simple seasonings and fresh ingredients.
The combination of melted butter, minced garlic, lemon slices, and thyme creates a rich but balanced flavor that complements the fish without overpowering it.
White wine adds depth to the baking juices, creating a light sauce that’s perfect for spooning over the finished fillets.
This recipe is especially convenient because everything cooks together in one baking dish, making preparation and cleanup simple.
It’s also versatile enough to serve with rice, potatoes, pasta, or your favorite vegetables.
Ingredients
For the Baked Halibut
4 thick-cut halibut fillets, approximately 150–200 g each
½ teaspoon salt, or to taste
½ teaspoon freshly ground black pepper
½ teaspoon paprika
5 tablespoons unsalted butter, melted
4 garlic cloves, finely minced
1 lemon, half thinly sliced and the remaining half cut into wedges
¼ cup dry white wine
4–6 fresh thyme sprigs, plus extra for garnish
Optional for Serving
Steamed rice
Roasted potatoes
Sautéed green beans
Steamed asparagus
Warm crusty bread
How to Make Oven-Baked Garlic Butter Halibut
1. Preheat the oven. Preheat your oven to 400°F (200°C). Lightly grease a medium-sized baking dish with a little butter to prevent the fish from sticking.
2. Prepare the halibut. Pat each halibut fillet dry with paper towels to remove excess moisture. This helps the seasonings adhere and encourages more even cooking.
3. Arrange the fish. Place the halibut fillets in a single layer in the prepared baking dish, leaving a little space between each piece.
4. Prepare the garlic butter. In a small bowl, combine the melted butter and freshly minced garlic. Stir until evenly mixed.
5. Brush the fillets. Generously brush the garlic butter mixture over the top and sides of each halibut fillet. Pour any remaining butter around the fish.
6. Season the halibut. Sprinkle the fillets evenly with salt, freshly ground black pepper, and paprika.
7. Add fresh thyme. Remove a few leaves from the thyme sprigs and scatter them over the fish. Arrange the remaining sprigs around the fillets.
8. Add lemon slices. Place one or two thin lemon slices on top of each halibut fillet.
9. Pour in the white wine. Carefully pour the dry white wine around the fish rather than directly over the seasoned surface.
10. Bake the halibut. Transfer the baking dish to the preheated oven and bake uncovered for 12–15 minutes, depending on the thickness of the fillets. Very thick pieces may need a few additional minutes.
11. Check for doneness. The halibut should turn opaque and separate easily into moist flakes when gently tested with a fork. For food safety, fish should reach an internal temperature of 145°F (63°C).
12. Finish with garlic butter. Remove the baking dish from the oven and carefully spoon the warm golden garlic butter cooking juices over each fillet.
13. Garnish and serve. Finish with fresh thyme sprigs and lemon wedges. Serve immediately while the fish is warm and tender.
Tips for Perfect Baked Halibut
Choose thick, evenly sized fillets. Halibut fillets of similar thickness cook more evenly and help prevent some portions from drying out.
Pat the fish dry before cooking. Removing excess surface moisture helps the butter and seasonings cling to the fish.
Use fresh garlic. Freshly minced garlic provides a more aromatic flavor than pre-minced garlic.
Avoid overcooking. Halibut is a lean fish and can become dry when cooked too long. Check the internal temperature and remove the fish from the oven once fully cooked.
Spoon the sauce over the fish. The buttery pan juices contain delicious flavors from the garlic, thyme, lemon, and wine.
How to Make the Best Garlic Butter Sauce
The garlic butter sauce is one of the highlights of this recipe.
As the halibut bakes, the melted butter combines with the white wine, garlic, fresh thyme, lemon, and natural fish juices.
The result is a light but flavorful sauce that complements the delicate texture of the halibut.
For a slightly richer finish, transfer the cooking juices to a small saucepan after baking and simmer briefly until slightly reduced.
You can also add a small squeeze of fresh lemon juice just before serving to brighten the flavor.
Can I Make This Recipe Without White Wine?
Absolutely. If you prefer not to cook with wine, replace it with an equal amount of fish stock, vegetable stock, or chicken broth.
The garlic butter, lemon, and thyme will still provide plenty of flavor.
For a slightly brighter sauce, add a teaspoon of fresh lemon juice to the broth before baking.
Can I Use Another Type of Fish?
Yes. Although halibut is ideal for this recipe, the same garlic butter cooking method works well with several other white fish varieties.
Cod
Haddock
Sea bass
Snapper
Pollock
Hake
Cooking times may vary depending on the thickness and texture of the fish.
Thinner fillets generally require less time, while thicker portions may need longer.
What to Serve with Garlic Butter Halibut
This oven-baked halibut pairs beautifully with a variety of simple side dishes.
Rice: Steamed jasmine rice, basmati rice, or lemon herb rice are excellent for absorbing the buttery sauce.
Potatoes: Roasted baby potatoes, creamy mashed potatoes, or boiled potatoes complement the mild flavor of the fish.
Vegetables: Steamed asparagus, roasted broccoli, sautéed green beans, or zucchini add freshness and color.
Bread: Warm crusty bread is perfect for soaking up the extra garlic butter sauce.
For a complete dinner, serve the halibut with roasted potatoes and steamed asparagus.
Can I Use Frozen Halibut?
Yes. Frozen halibut works well for this recipe, but it should be completely thawed before baking.
For best results, thaw the fish overnight in the refrigerator.
Once thawed, pat the fillets dry thoroughly before seasoning and adding the garlic butter.
Excess moisture from frozen fish can dilute the sauce, so removing surface water is important.
Can I Prepare This Recipe Ahead of Time?
You can prepare the garlic butter mixture and slice the lemon in advance.
The halibut can also be portioned and stored in the refrigerator until ready to cook.
For the best flavor and texture, assemble and bake the fish shortly before serving.
Avoid leaving raw halibut in lemon juice for extended periods because the acidity can begin changing the fish’s texture.
How to Store Leftovers
Allow leftover halibut to cool slightly before transferring it to an airtight container with some of the cooking sauce.
Refrigerate promptly and consume within 2–3 days.
To reheat, place the fish in a covered baking dish with a little garlic butter sauce and warm gently until heated through.
Avoid overheating because halibut can become dry and lose its tender texture.
Frequently Asked Questions
How long should halibut bake at 400°F?
Halibut fillets generally take 12–15 minutes at 400°F (200°C), depending on thickness. Thick fillets may require additional cooking time.
How do I know when halibut is done?
The flesh should be opaque and flake easily when tested with a fork. The recommended safe internal temperature is 145°F (63°C).
Should I cover halibut while baking?
No. This recipe is baked uncovered, allowing the butter and seasonings to coat the fish while it cooks.
Can I use salted butter?
Yes. If using salted butter, reduce the additional salt to prevent the finished dish from becoming too salty.
Can I add vegetables to the baking dish?
Absolutely. Cherry tomatoes, thinly sliced zucchini, or asparagus can be arranged around the fish. Harder vegetables such as potatoes should be partially cooked first.
Can I add Parmesan cheese?
Yes. A light sprinkle of grated Parmesan can add a savory finish, although the classic garlic butter version is delicious without it.
Final Thoughts
Oven-Baked Garlic Butter Halibut with Lemon and Thyme is a simple yet elegant seafood recipe that combines tender, flaky white fish with rich melted butter, fresh garlic, lemon, aromatic thyme, and white wine.
With minimal preparation, one baking dish, and a cooking time of approximately 15 minutes, this recipe is perfect for creating a delicious homemade seafood dinner without complicated steps.
Serve it with rice, roasted potatoes, or fresh vegetables for a satisfying meal that’s suitable for both everyday cooking and special occasions.