This elegant fish dish features tender, pan-seared filets paired with a silky lemon dill beurre blanc. It’s a restaurant-quality meal that’s surprisingly simple to prepare at home.
Perfect for a refined dinner, the delicate fish and rich, buttery sauce create a balanced and flavorful experience.
Why You’ll Love This Recipe
The fish is tender, flaky, and cooked to perfection with a crisp, golden skin.
The lemon dill beurre blanc adds a bright, buttery richness that elevates the entire dish.
It looks impressive yet comes together with simple techniques and ingredients.
This recipe is perfect for both special occasions and elevated weeknight dinners.
What You’ll Need (Ingredient Highlights)
Sablefish, also known as black cod, is rich and buttery with a delicate texture.
White wine forms the base of the beurre blanc, adding acidity and depth.
Cold butter is essential for creating a smooth, emulsified sauce.
Fresh dill and lemon juice bring brightness and balance to the richness.
Pro Tips Before You Start
Pat the fish dry to ensure a crispy skin when searing.
Score the skin lightly to prevent curling during cooking.
Keep the butter cold for a stable beurre blanc emulsion.
Do not overheat the sauce once the butter is added to avoid separation.
How to Make Fish Filets Lemon Dill Beurre Blanc
Step 1 – Prepare the fish
Pat the filets dry and lightly salt both sides. Let them rest for 15 to 20 minutes.
Step 2 – Score the skin
Use a sharp knife to make 2 to 3 shallow cuts on the skin of each filet.
Step 3 – Sear the fish
Heat oil in a stainless steel pan over medium heat. Cook filets skin side down for 4 to 5 minutes until crisp.
Step 4 – Finish cooking
Flip the filets and cook for 2 minutes more. Add butter and spoon it over the fish as it melts.
Step 5 – Check doneness
Cook until the internal temperature reaches 125 to 130°F (52 to 54°C). Remove from heat.
Step 6 – Start the sauce
In a small pot, bring shallots and white wine to a boil. Reduce until nearly evaporated, about 5 to 7 minutes, then turn off heat.
Step 7 – Emulsify the beurre blanc
Whisk in cold butter cubes gradually, ensuring each addition is fully incorporated before adding more.
Step 8 – Finish the sauce
Whisk in lemon juice and dill. Taste and season with salt, then serve over the fish.
What to Serve Them With
Serve with steamed asparagus or green beans for a fresh contrast.
Pair with mashed potatoes or risotto to soak up the rich sauce.
A crisp white wine complements the flavors beautifully.
Variations / Substitutions
Use halibut, cod, or sea bass instead of sablefish.
Swap dill for tarragon or parsley for a different herb profile.
Add a touch of cream for a slightly richer, more stable sauce.
Storage & Leftovers
Store leftovers in an airtight container in the refrigerator for up to 2 days.
Reheat gently over low heat to avoid overcooking the fish or breaking the sauce.
FAQs
Can I make this recipe ahead of time?
It’s best served fresh, but the sauce can be prepared slightly ahead and kept warm.
How should I store leftovers?
Store in an airtight container in the fridge and consume within 2 days.
Can I freeze this dish?
Freezing is not recommended as the sauce may separate and the fish texture can change.
Can I substitute some of the ingredients?
Yes, you can use different white fish or herbs based on availability.
How long does this recipe take to make?
It typically takes about 30 to 40 minutes from start to finish.
Is this recipe kid-friendly?
Yes, though the sauce has a slightly tangy flavor that some may find more refined.
Can I make this dish gluten-free or dairy-free?
It is naturally gluten-free, but dairy-free substitutions will alter the sauce significantly.
What should I serve it with?
It pairs well with vegetables, rice, or creamy sides like mashed potatoes.
Do I need special equipment?
A stainless steel pan and whisk are helpful, but no special tools are required.
How do I know when it’s perfectly cooked?
The fish should flake easily and reach the recommended internal temperature.
Final Thoughts
This fish filets lemon dill beurre blanc is a refined yet approachable dish that delivers rich flavor and elegant presentation. It’s a perfect choice when you want something impressive without complicated steps.
Full Recipe Card
Ingredients
2 (4 ounce) filets sablefish (black cod), or other white fish
salt to taste
1 tablespoon grapeseed oil, or more as needed
2 teaspoons unsalted butter
1/2 cup white wine, such as Pinot Grigio
1 shallot, minced
1 stick cold unsalted butter, cut into cubes
1 tablespoon lemon juice, or more to taste
1 teaspoon fresh dill, or more to taste
Instructions
Pat fish dry, salt, and rest 15–20 minutes. Score the skin.
Heat oil and cook fish skin side down 4–5 minutes, flip and cook 2 minutes more.
Add butter and baste. Cook to 125–130°F (52–54°C).
Boil shallots and wine, reduce until nearly evaporated.
Whisk in cold butter gradually until emulsified.
Add lemon juice and dill, season, and serve over fish.
