Seafood Gratin Creamy Bake

Category: Dinner Solutions You'll Love

Savor a classic French-inspired seafood gratin layered with tender shrimp and scallops, all nestled in a silky cream sauce. The dish comes together quickly by sautéing onions and garlic, then briefly cooking the seafood before blending with cream and grape juice for sweetness. Topped with a generous layer of grated cheese, it bakes until bubbly and golden. Each forkful brings creamy richness balanced with savory seafood and a hint of sweetness from the grape juice, creating a comforting and elegant meal ideal for weeknights or special gatherings.

Hannah Author
Updated on Sun, 15 Jun 2025 18:21:17 GMT
A bowl of seafood gratin. Save
A bowl of seafood gratin. | recipesbyhannah.com

Seafood gratin brings together succulent shrimp and scallops in a luscious creamy sauce with a blanket of bubbly cheese on top This recipe is my comfort food go-to for cozy nights and always reminds me of long family dinners where everyone goes back for seconds

One chilly evening I decided to try this dish and was surprised at how quickly it became a favorite Everyone at my table was quiet except for the sound of spoons scraping the baking dish clean

Ingredients

  • Shrimp: Fresh or thawed for the sweetest cleanest taste Look for firm plump pieces and avoid any with a fishy smell
  • Scallops: Choose fresh sea scallops if possible They should be glossy and smell briny not sour
  • Butter: Unsalted helps create a silky sauce and supports gentle sautéing
  • Onion: Opt for a firm onion with no soft spots It forms the flavor base and sweetens as it cooks
  • Garlic: Freshly minced cloves give the sauce a deep aromatic boost
  • Heavy cream: Pick one with a high fat content for the richest result Avoid light creams or substitutions here
  • White grape juice: This gives a hint of sweetness and acidity Pick pure juice no added sugars needed
  • Grated cheese: Pick your favorite such as Gruyere or mozzarella for meltiness and depth Pregrated works but hand grating melts better
  • Salt and Black pepper: Go for sea salt and freshly cracked pepper It really brightens all the flavors

Step-by-Step Instructions

Prepare the seafood:
Pat the shrimp and scallops dry fully after rinsing Moisture prevents browning and can water down your sauce Let them sit on a paper towel for a few minutes before cooking
Sauté the aromatics:
In a large skillet over medium heat melt the butter Add chopped onion and minced garlic Stir consistently for three to four minutes The onions should turn translucent not browned and the garlic will become fragrant
Cook the seafood:
Add the shrimp and scallops in a single layer Cook each side for about a minute and a half Watch closely The shrimp will turn pink and curl while the scallops become opaque Do not overcook or the seafood turns rubbery
Build the sauce:
Pour in the white grape juice and let it simmer for two minutes Stir well to loosen any bits from the pan Then add heavy cream salt and black pepper Mix until the sauce just begins to thicken from the heat
Assemble and bake:
Transfer the seafood mixture into a baking dish Any size works as long as the mixture fills it without spilling Sprinkle grated cheese evenly across the top for that signature bubbly finish Preheat your oven to one hundred eighty Celsius or three hundred fifty Fahrenheit
Bake to perfection:
Slide the dish into the oven Bake for about fifteen minutes Watch for the cheese to get golden with bubbling edges If using a broiler finish with two minutes under high heat for deeper color
Rest and serve:
Let your gratin sit for about five minutes after removing from the oven This helps the sauce set a bit and makes serving much easier
A bowl of seafood gratin. Save
A bowl of seafood gratin. | recipesbyhannah.com

My favorite ingredient here has to be the scallops Their buttery sweetness in a creamy sauce always steals the spotlight I will never forget my niece trying scallops for the first time in this dish and declaring they were her favorite thing ever

Storage Tips

Store leftover gratin in an airtight container in the refrigerator for up to two days To reheat bake gently covered in foil to keep the seafood tender The sauce may thicken more after storing so adding a splash of cream while reheating keeps it silky

Ingredient Substitutions

If you are out of scallops extra shrimp or even chunks of firm white fish work beautifully For a tangier flavor replace white grape juice with a splash of dry white wine Dairyfree creams and vegan butters can be used but the sauce will lose some richness Try adding blanched spinach or peas for a veggie version

Serving Suggestions

Pair the gratin with crusty bread to mop up the sauce or serve alongside a crisp green salad with a mustardy vinaigrette For heartier appetites this dish shines with herby roasted potatoes or over a bed of steamed rice Light white wines and lemon wedges balance the richness

A bowl of seafood gratin. Save
A bowl of seafood gratin. | recipesbyhannah.com

Cultural Context

Seafood gratin is a French classic loved in coastal towns where seafood is fresh and plentiful The creamy sauced baked dishes found in Bistro menus hail from the tradition of putting simple ingredients together for maximum comfort and elegance This style of cooking makes the most of small portions of luxurious seafood shared among family and friends

Recipe FAQs

→ Can other types of seafood be used?

Yes, you can substitute with crab, white fish, or even mussels. Adjust the cooking time depending on the seafood chosen to avoid overcooking.

→ What cheese varieties work best as a topping?

Gruyère, mozzarella, Parmesan, or a mild cheddar all melt well and create a flavorful golden crust. Try a blend for depth of flavor.

→ Is it possible to make this dish ahead of time?

You can assemble the gratin in advance and refrigerate it. Bake just before serving for the best texture and flavor.

→ How can I achieve a crispier topping?

Sprinkle a little panko or breadcrumbs mixed with melted butter over the cheese before baking for extra crunch.

→ What sides complement this dish?

Serve alongside a green salad, crusty bread, or steamed vegetables to balance the rich, creamy flavors of the gratin.

→ Can I make a vegetarian version?

Yes, replace shrimp and scallops with a mix of vegetables like mushrooms, zucchini, and leeks for a hearty alternative.

Seafood Gratin Creamy Bake

Shrimp and scallops baked in a creamy sauce with cheese, creating a satisfyingly rich French-style main dish.

Preparation Time
10 min
Cooking Time
20 min
Total Time
30 min

Category: Main Dishes

Difficulty Level: Intermediate

Cuisine: French

Yield: 4 Servings

Dietary Preferences: Gluten-Free

Ingredients

→ Seafood and dairy

01 200 g Shrimp, peeled and deveined
02 200 g Scallops, fresh or thawed if frozen
03 200 ml Heavy cream
04 50 g Grated cheese for topping

→ Vegetables and aromatics

05 1 medium Onion, chopped
06 2 cloves Garlic, minced

→ Seasonings and others

07 2 tablespoons Butter, for sautéing
08 50 ml White grape juice
09 1/2 teaspoon Salt, to taste
10 1/2 teaspoon Black pepper, to taste

Directions

Step 01

Gather fresh shrimp and scallops. If using frozen seafood, thaw completely, rinse under cold water, and pat dry.

Step 02

In a large skillet, melt butter over medium heat. Add chopped onion and minced garlic, sauté for 3-4 minutes until translucent.

Step 03

Add shrimp and scallops to the skillet, cooking for about 3 minutes until shrimp turns pink and scallops are opaque.

Step 04

Pour in white grape juice and simmer for 2 minutes. Stir in heavy cream, salt, and black pepper, mixing well.

Step 05

Transfer the seafood mixture into a baking dish and sprinkle grated cheese on top.

Step 06

Preheat the oven to 180°C (350°F). Bake the gratin for about 15 minutes until the cheese is bubbly and golden brown.

Step 07

Remove from the oven and let cool slightly before serving.

Notes

  1. Seafood gratin is a versatile dish that can be customized with different seafood or made vegetarian with vegetables.

Required Equipment

  • large skillet
  • baking dish
  • measuring cups
  • measuring spoons
  • knife
  • cutting board

Allergen Information

Check all ingredients for potential allergens and consult a medical professional if uncertain.
  • Seafood
  • Dairy

Nutritional Information (per serving)

These details are for reference only and shouldn't replace medical advice.
  • Calories: 350
  • Fats: ~
  • Carbohydrates: ~
  • Proteins: ~