Baking seafood baked comfort food weeknight seafood gratin

Baked Scallops au Gratin with Garlic-Parmesan Crust

Name: Baked Scallops au Gratin with Garlic-Parmesan Crust
Prep time: 15 min
Cook time: 12 min
Total time: 27 min
Yield: 4 servings
Cuisine: American
Ingredients: 1 lb Sea scallops (dry-packed); 3 tbsp Unsalted butter; 2 cloves Garlic, minced; 1 tbsp Fresh lemon juice; 0.75 cup Panko breadcrumbs; 0.75 cup Grated Parmesan cheese (freshly grated); 2 tbsp Fresh parsley, finely chopped; 1 tbsp Extra-virgin olive oil; 1 tsp (salt) + 1/2 tsp (pepper) Kosher salt and freshly ground black pepper

Tender sea scallops baked under a golden garlic-Parmesan panko crust — a cozy, restaurant-style gratin that’s quick enough for weeknights but elegant enough for guests. Bright lemon and fresh parsley lift the rich, buttery topping for a satisfying baked seafood comfort dish.

0.0(0 reviews)

Prep: 15m · Cook: 12m · Total27 mins

DifficultyMedium

Serves4

AuthorJake

Baked Scallops au Gratin with Garlic-Parmesan Crust

Ingredient Spotlight

Sea scallops (dry-packed)

Sea scallops are the large adductor muscle of scallops (a type of shellfish) prized for their sweet, delicate, slightly briny flavor and tender texture. “Dry-packed” means they haven’t been soaked in a phosphate or water solution, so they brown and sear much better than “wet-packed” scallops that hold added liquid. Common in French, Japanese and coastal American cooking, they’re sold at fish markets and supermarket seafood counters; good substitutes are bay scallops (adjust cooking time), large shrimp, or firm white fish like halibut or cod if scallops aren’t available.

Ingredient Spotlight

Panko breadcrumbs

Panko are Japanese-style breadcrumbs made from crustless white bread processed into light, flaky crumbs that give an extra-crispy, airy crunch when fried or used as a topping. They have a neutral flavor and a coarser, crispier texture than regular breadcrumbs, and are widely used in Japanese and fusion cooking. Find them in the Asian or baking aisle of most supermarkets or at Asian markets; substitutes include regular dry breadcrumbs (for less crunch), crushed cornflakes, or pulse crustless white bread briefly in a food processor to make homemade coarse crumbs.

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Jake's note

"This scallop gratin is a true comfort-food winner — creamy, crisp, and fragrant with garlic and lemon. It’s perfect for a cozy dinner or a special occasion when you want something impressive with minimal fuss."

Baked Scallops au Gratin with Garlic-Parmesan Crust

This Baked Scallops au Gratin is built around a few deliberate choices that make the dish sing: dry-packed scallops for a clean, briny sweetness, a garlic-lemon butter that kisses each scallop, and a toasted panko–Parmesan crust that turns buttery juices into crisp, savory shards. The contrast between the tender, just-cooked scallops and the crunchy topping is what gives this gratin its homey yet elevated feel; the lemon and parsley keep the finish bright so the richness never feels heavy.

It’s a great recipe for both weeknight cooking and low-key entertaining because the oven does the work and the components are simple to prep ahead. Toasting the panko in olive oil before mixing with Parmesan adds a nutty depth you won’t get from raw crumbs, and finishing with an extra squeeze of lemon lifts each bite. If you value texture and timing—golden crust, opaque scallops, and buttery pan juices—this version hits those notes reliably and elegantly.

Plan your timing

Enter your target meal time:

6:30 pm–6:35 pm→Make garlic-lemon butter

6:35 pm–6:40 pm→Prepare and season scallops

6:40 pm–6:45 pm→Toast panko and mix topping

6:45 pm–6:50 pm→Assemble and bake

6:50 pm–6:55 pm→Finish and serve

Ingredients

Yield

Instructions

Make garlic-lemon butter

Preheat the oven to 425°F (220°C). In a small saucepan over low heat, melt the butter with the minced garlic just until fragrant (about 1 minute) — do not brown the garlic. Remove from heat and stir in the lemon juice; set aside, reserving about 1 tablespoon of the butter for finishing.

For this step

3 tbspUnsalted butter
2 clovesGarlic, minced
1 tbspFresh lemon juice

Prepare and season scallops

Pat the scallops very dry with paper towels and trim any side muscle. Arrange them in a single layer in a shallow gratin dish or four individual ramekins, then season evenly with kosher salt and freshly ground black pepper. Spoon a little of the garlic-lemon butter over each scallop to coat.

For this step

1 lbSea scallops (dry-packed)
1 tsp (salt) + 1/2 tsp (pepper)Kosher salt and freshly ground black pepper

Toast panko and mix topping

Heat the olive oil in a small skillet over medium heat, add the panko and toast, stirring frequently, until golden and crisp, about 3–4 minutes. Transfer to a bowl and stir in the grated Parmesan and chopped parsley until evenly combined; taste and adjust seasoning if needed.

For this step

0.75 cupPanko breadcrumbs
0.75 cupGrated Parmesan cheese (freshly grated)
2 tbspFresh parsley, finely chopped
1 tbspExtra-virgin olive oil

Assemble and bake

Evenly sprinkle the panko-Parmesan mixture over the scallops and dot the top with any remaining garlic-lemon butter. Bake in the preheated oven for 10–12 minutes, until the topping is golden and the scallops are opaque and just cooked through (internal temperature about 120–125°F).

Finish and serve

Let the gratin rest 2 minutes, then finish with an extra squeeze of lemon and a scatter of additional parsley if desired. Serve hot with crusty bread or a simple green salad to soak up the buttery juices.

Tips from the kitchen

Pat scallops bone-dry

Use paper towels to remove surface moisture and trim the side muscle; drier scallops brown and keep a firmer texture when baked.

Toast panko first

Lightly toasting breadcrumbs in olive oil gives the crust a golden color and crunch that won’t collapse from the scallop juices.

Watch internal temp

Remove scallops when they reach 120–125°F or when opaque and just firm; residual heat will carry them the rest of the way without becoming rubbery.

Even topping distribution

Press the panko–Parmesan gently so it contacts each scallop; loose topping can shift and burn on the edges.

Reserve finishing butter

Hold back a tablespoon of garlic-lemon butter to dot over the gratin before baking for gloss and extra flavor in the juices.

Variations & substitutions

Creamy Mornay-style Gratin

Fold 1/2 cup of simple béchamel or Mornay sauce into the scallops before topping for a richer, creamier casserole reminiscent of classic French gratins.

Spicy Citrus Twist

Add 1/2 teaspoon red pepper flakes to the garlic butter and swap lemon for orange zest and juice for a sweet‑heat brightening of the dish.

Gluten-free Crust

Use crushed gluten-free crackers or finely ground almond meal mixed with grated Parmesan and a touch of melted butter instead of panko.

Shellfish Mix

Stir in small shrimp or bay scallops with the sea scallops to stretch servings and create a varied-texture gratin; reduce bake time slightly if pieces are tiny.

Storage & make-ahead

Leftovers keep in an airtight container in the refrigerator for up to 2 days; the topping will soften as it sits. Reheat in a 350°F oven for 8–12 minutes until warmed through and the crust re-crisps, avoiding the microwave which tends to make the topping soggy. You can prepare the panko–Parmesan topping a day ahead and store it separately in the fridge to keep it extra-crisp at bake time.

What to serve with it

Serve the gratin straight from ramekins or a shallow dish with plenty of crusty bread to mop up the buttery juices and a lemon wedge for extra brightness. Pair with a peppery arugula salad dressed in lemon vinaigrette, roasted asparagus, or a light lemony risotto; a crisp Sauvignon Blanc, unoaked Chardonnay, or a dry sparkling wine complements the dish's richness.

Frequently asked questions

Can I use frozen scallops?

Yes, but thaw them completely in the refrigerator and pat them very dry before baking; frozen wet-packed scallops release more liquid and can make the gratin watery.

Why do you toast the panko instead of using it raw?

Toasting in oil gives the crumbs a deeper, nutty flavor and ensures the topping crisps rather than turning gummy from the butter and scallop juices.

How can I tell when the scallops are done?

They should be opaque throughout and just firm to the touch; an instant‑read thermometer should read about 120–125°F when removed from the oven to avoid overcooking.

Can I assemble ahead of time?

You can assemble and refrigerate the dish unbaked for up to 24 hours, but wait to add the panko topping or keep it loosely covered to prevent sogginess; allow the dish to come close to room temperature before baking.

Is broiling a good way to brown the crust?

You can broil for the last 1–2 minutes to deepen color, but watch closely to prevent burning—the panko and Parmesan brown quickly under high heat.

About the author

Jake

Hello, I'm Jake. I started this recipe site with the idea that I hated recipe websites that overwhelm you with long stories and ads just to see plain content that's not helpful. My goal is to provide you with quality recipes, simple ideas and a fun cooking experience. There's lots of fun things to cook, and I think as you browse the site you'll find that TopShelf.Recipes is the place for quality recipes on the web.

See all recipes by Jake →

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Ingredients

4 servings

Step 1: Make garlic-lemon butter

Unsalted butter3 tbsp
Garlic, minced2 cloves
Fresh lemon juice1 tbsp

Step 2: Prepare and season scallops

Sea scallops (dry-packed)1 lb
Kosher salt and freshly ground black pepper1 tsp (salt) + 1/2 tsp (pepper)

Step 3: Toast panko and mix topping

🛒 BuyPanko breadcrumbs0.75 cup
Grated Parmesan cheese (freshly grated)0.75 cup
Fresh parsley, finely chopped2 tbsp
Extra-virgin olive oil1 tbsp

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Nutrition Facts

Per serving: 4 oz scallop

Calories276

Total Fat19.6g

Saturated Fat9.7g

Trans Fat0.2g

Polyunsaturated Fat2.8g

Monounsaturated Fat2g

Total Carbohydrates16.8g

Dietary Fiber0.9g

Total Sugars0.8g

Protein8.5g

Nutrition values are estimated from USDA ingredient data and may vary based on preparation, brands, and portion sizes. Values are provided for informational purposes only.

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