Broiled Flounder Recipe: Buttery Garlic and Herb Finish

There’s a reason flounder is a favorite for quick, elegant dinners—it cooks in minutes and takes on flavors beautifully. This method delivers tender, flaky fish with a golden, buttery crust that’s hard to resist.

The key is a hot broiler and a simple garlic-herb butter that melts into every bite. A light seasoning enhances the fish’s natural sweetness without overpowering it. The result is restaurant-quality seafood ready in under 15 minutes.

Serve it with lemon wedges and a sprinkle of fresh parsley for brightness. The fish stays moist and delicate, while the topping adds richness that pairs perfectly with steamed vegetables or rice.

This dish proves that impressive meals don’t need complicated steps. Simple ingredients, precise timing, and a watchful eye are all it takes.

Ingredients for Broiled Flounder

Elegant seafood starts with fresh flounder, garlic-herb butter, and simple seasonings for a restaurant-quality dish.

The flounder is the star—look for wild-caught, skinless fillets at Whole Foods or a trusted seafood counter. The fish should smell clean and ocean-fresh, with a subtle sheen (never dull or dry). For the butter, Plugrá or Kerrygold unsalted are ideal; their higher fat content creates a richer topping. The herbs should be vibrant—organic parsley and dill from the produce section have the best aroma.

No white wine? Chicken broth with a splash of lemon juice works in a pinch. Fresh herbs not available? Dried at one-third the amount, but rehydrate them in a bit of warm water first. If dill isn’t your thing, tarragon or chives add a nice twist. The lemon can be bottled in emergencies, but freshly zested and juiced makes a noticeable difference in brightness.

The compound butter can be made 1 day ahead and refrigerated. Broiled fish is best served immediately, but leftovers keep in the fridge for 1-2 days—reheat gently in a low oven to avoid drying. The raw fish should be used within 24 hours of purchase for optimal freshness.

Step-by-Step Instructions for Broiled Flounder

Here’s the method. Straightforward, tested, works every time.

Step 1: Prep the Flounder Fillets

Pat the 1.5 lb flounder fillets completely dry with paper towels. This is crucial—moisture prevents proper browning and can cause the fish to steam instead of broil. Season both sides evenly with 0.75 tsp kosher salt, 0.5 tsp freshly ground black pepper, and 0.25 tsp paprika for a subtle color boost.

Arrange the fillets on a rimmed baking sheet lined with foil and lightly brushed with 1 tbsp olive oil. The foil makes cleanup effortless, while the oil ensures the delicate fish doesn’t stick. Let the seasoned fillets sit at room temperature for 10 minutes to take the chill off—this promotes even cooking.

Step 2: Make the Garlic Herb Butter

In a small bowl, combine 6 tbsp unsalted butter (softened to room temperature) with 3 cloves garlic cloves (minced finely), 0.25 cup fresh parsley (finely chopped), and 2 tbsp fresh dill (chopped). Stir until fully incorporated—the mixture should be vibrant green with visible herb flecks.

Add the zest from 1 whole lemon (reserve the juice for later) and mix again. The citrus oils in the zest will brighten the butter’s richness. This compound butter not only bastes the fish but also creates a luxurious sauce as it melts under the broiler’s heat.

Step 3: Broil to Flaky Perfection

Position an oven rack 6 inches from the broiler element and preheat the broiler on high. Spread the garlic herb butter evenly over the flounder fillets, ensuring every surface is coated. Pour 0.25 cup dry white wine around—not over—the fillets to create steam, which keeps the fish moist during broiling.

Broil for 6-8 minutes until the tops are golden brown and the fish flakes easily when tested with a fork. The butter should be bubbling and slightly caramelized at the edges. Avoid opening the oven door unnecessarily—temperature fluctuations can lead to uneven cooking.

Step 4: Rest and Serve

Remove the baking sheet from the oven and immediately drizzle the reserved lemon juice from 1 whole lemon over the fillets. This acidity cuts through the butter’s richness and enhances the fish’s natural sweetness.

Let the flounder rest for 2-3 minutes to allow the juices to redistribute. Garnish with additional chopped parsley if desired, and serve with 4 pieces lemon wedges on the side for a final burst of freshness. The fish should be opaque throughout and tender enough to cut with a fork.

Essential Equipment for Perfect Results

Broiler Pan Essentials

For even browning and easy cleanup, I swear by a heavy-gauge stainless steel broiler pan with a slotted top. The slots allow heat circulation while catching drippings. Nordic Ware makes a durable 11×17-inch version that fits most ovens perfectly. 🔥

Baking Sheet Alternative

If you don’t have a broiler pan, use a rimmed half-sheet pan (18×13-inch). Line it with heavy-duty aluminum foil for easy cleanup. The rim prevents the garlic-herb butter from spilling into your oven. I always keep a stack of Reynolds Wrap on hand.

Thermometer for Precision

Though flounder cooks quickly, an instant-read thermometer ensures perfect doneness. I use the ThermoWorks ThermoPop—it’s affordable, accurate, and gives readings in 2-3 seconds. Aim for 145°F internal temperature in the thickest part.

Butter Spreader

A small offset spatula helps spread the compound butter evenly over the delicate fillets without tearing them. The OXO 4-inch offset is my go-to—its flexible blade glides smoothly. This tool also helps lift the fish off the pan after cooking.

Citrus Tool

For zesting the lemon, a microplane creates fine, fluffy zest that blends seamlessly into the butter. I prefer the Microplane Premium model—it’s sharp and comfortable to grip. The fine zest distributes flavor more evenly than larger strips.

Tongs for Serving

Use 12-inch locking tongs to transfer the flaky fillets to plates. OXO Good Grips tongs have a gentle grip that won’t break the fish. Their silicone heads are oven-safe up to 600°F, perfect for broiler use. 💛

Frequently Asked Questions