As the aroma of garlic wafts through the kitchen, a wave of nostalgia hits me, transporting me back to family gatherings where every dish told a story. This Creamy Seafood Gratin, rich with tender shrimp and scallops, is no exception. Perfectly baked to golden perfection and topped with crispy breadcrumbs, it’s an inviting centerpiece for any cozy dinner or celebratory feast. Not only is this recipe quick and easy to whip up, but it’s also gluten-free, making it a comforting option for everyone at your table. With a few tips for ingredient substitutions, you can personalize this seafood delight to match your tastes. Ready to discover how to bring this indulgent comfort food to life in your own kitchen? Let’s dive in!

Why is this Seafood Gratin a Must-Try?
Quick and Easy: This recipe is designed for busy nights, allowing you to create a stunning dish in under 30 minutes.
Decadent Flavor: The combination of fresh shrimp and scallops enveloped in a creamy sauce is nothing short of heavenly.
Crowd-Pleasing Appeal: Perfect for family dinners or entertaining guests, this dish is sure to impress with its elegant presentation and mouthwatering aroma.
Versatile Customizations: Whether you’re catering to dietary needs with gluten-free options or swapping seafood for your favorite ingredients, this gratin adapts beautifully.
Memorable Comfort Food: Each bite offers warmth and richness, evoking memories of cozy gatherings and cherished moments. Don’t forget to pair it with a lovely side salad for a complete meal!
Seafood Gratin Ingredients
Here’s what you’ll need to create this rich and creamy Seafood Gratin that’s sure to become a family favorite.
For the Seafood
- Shrimp – Adds tender, sweet seafood flavor; use fresh for the best results.
- Scallops – Provides a rich, buttery taste and tender texture; fresh is preferable.
For the Sauce
- Cream (2 cups) – Creates a luxurious, smooth sauce; half-and-half can be a lighter option.
- Garlic (2 cloves, minced) – Enhances flavor with aromatic notes; fresh garlic is recommended.
- Butter (2 tablespoons) – Used for sautéing to add richness; substitute with olive oil for a dairy-free version.
- Salt and Pepper – Essential for seasoning; adjust to your taste for the perfect balance.
For Topping
- Grated Cheese (1 cup) – Melts beautifully and adds flavor; options include Gruyère or cheddar for a delightful twist.
- Breadcrumbs (to taste) – Creates a crispy topping; gluten-free breadcrumbs can be used for a gluten-free version.
- Fresh Parsley (for garnish) – Adds color and freshness to the dish, enhancing its presentation.
Gather these ingredients, and you’re well on your way to bringing the indulgent flavors of this Seafood Gratin to your table!
Step‑by‑Step Instructions for Seafood Gratin
Step 1: Preheat the Oven
Begin by preheating your oven to 400°F (200°C). This temperature is crucial for achieving that perfect golden crust on your Seafood Gratin. As the oven heats up, you’ll have just the right amount of time to prepare the seafood and sauce, ensuring everything is ready to pop in for baking shortly.
Step 2: Melt the Butter
In a large skillet, melt 2 tablespoons of butter over medium heat. Allow the butter to fully liquefy and start to foam, showcasing its rich flavor. This will create a luscious base for your Seafood Gratin. Make sure to keep an eye on the heat to prevent burning while you prepare the next steps.
Step 3: Sauté the Garlic
Once the butter is melted, add 2 cloves of minced garlic to the skillet. Sauté for about 1-2 minutes, stirring continuously until the garlic becomes fragrant and softens, but be careful not to let it brown. The aromatic essence will enhance the overall flavor profile of your Seafood Gratin.
Step 4: Cook the Seafood
Add the shrimp and scallops to the skillet, cooking for 3-4 minutes. Stir gently until the seafood turns opaque and tender, indicating it’s cooked through but not overdone. This step is key to ensuring that your Seafood Gratin maintains that delicate texture without becoming rubbery during baking.
Step 5: Stir in the Cream
Pour in 2 cups of cream and season with salt and pepper to taste. Mix everything together until wonderfully combined, allowing the rich flavors to meld beautifully. This creamy sauce will envelop your seafood and make for an indulgent Seafood Gratin that is sure to impress.
Step 6: Transfer to Baking Dish
Carefully transfer the creamy seafood mixture into a baking dish, spreading it out evenly. Ensure that it’s distributed well for uniform cooking and bubbling. This is where your Seafood Gratin will bake to achieve that irresistible golden topping, so choose a dish that’s the right size for even baking.
Step 7: Top with Cheese and Breadcrumbs
Sprinkle 1 cup of grated cheese evenly over the seafood mixture, covering it completely. Next, add breadcrumbs on top for a delightful crunch. Choose gluten-free breadcrumbs if you’re looking for a gluten-free version. This combination will create that mouthwatering crispy layer as it bakes in the oven.
Step 8: Bake to Perfection
Place the dish in the preheated oven and bake for 15-20 minutes. Keep an eye on it—you’re looking for a bubbly texture and a beautifully golden top. By the time the timer buzzes, your Seafood Gratin will be ready to captivate everyone’s senses with its enticing aroma.
Step 9: Garnish and Serve
After removing from the oven, allow your Seafood Gratin to cool slightly before serving. Garnish with fresh parsley for a burst of color and added freshness. This final touch not only elevates the presentation but also enhances the flavors of this comforting dish as you prepare to enjoy it with family and friends.

Expert Tips for Seafood Gratin
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Fresh Seafood Essential: Always opt for fresh shrimp and scallops for the best flavor and texture. Frozen seafood can work in a pinch, but it may affect the overall quality.
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Creamy Sauce Adjustments: Consider using half-and-half instead of heavy cream for a lighter version of the Seafood Gratin without compromising creaminess.
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Watch the Bake Time: Keep an eye on your gratin as it bakes; ovens can vary. Remove it when the topping is golden and bubbly to avoid overcooking.
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Customize Your Toppings: Feel free to switch up the cheese and breadcrumbs. Experiment with flavors like feta or panko for a new twist on the classic gratin.
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Perfect Serving Size: Use a baking dish that’s appropriately sized to your seafood mixture; too large or too small can impact the baking process and texture.
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Season to Taste: Don’t skip adjusting the salt and pepper in the sauce; they are crucial for enhancing the flavors of the seafood in your Seafood Gratin.
What to Serve with Creamy Seafood Gratin?
To complement the rich, velvety indulgence of your Seafood Gratin, consider these delightful pairings that create a harmonious and satisfying meal.
- Garlic Bread: The crunch and buttery garlic flavor beautifully contrast the creamy gratin and add a delightful touch to your dining experience.
- Simple Arugula Salad: This fresh salad with lemon vinaigrette offers a peppery bite, cutting through the richness of the Seafood Gratin.
A light salad can help refresh your palate while enhancing the overall taste profile. The peppery arugula, paired with a zesty dressing, invigorates each bite and provides a lovely balance.
- Coleslaw: A tangy and crispy coleslaw brings texture and brightness to the table, providing a nice crunch to offset the creamy seafood dish.
- Roasted Asparagus: Tender, lightly-charred asparagus offers an elegant touch, adding color and a nutritious side that complements the seafood perfectly.
- Chardonnay: Enjoy a glass of chilled Chardonnay, which enhances the seafood flavors without overpowering the dish, making for a lovely pairing.
- Lemon Tart: For dessert, a light lemon tart offers a refreshing finish, its citrus notes beautifully cleansing the palate after the rich gratin.
- Herbed Rice Pilaf: A fluffy pilaf with herbs adds a subtle flavor layer and delightful texture, creating an inviting contrast to the gratin’s creaminess.
- Baked Potatoes: Serve with crispy-skinned baked potatoes, which can be topped with a hint of sour cream for an extra comforting touch alongside the Seafood Gratin.
Variations & Substitutions for Seafood Gratin
Feel free to make this delightful Seafood Gratin your own with these tempting variations and substitutions. Each twist brings its own special touch to this comforting dish!
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Dairy-Free: Substitute cream with coconut cream for a rich, non-dairy sauce. This adds a subtle sweetness while keeping the gratin creamy and delicious.
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Crab or Lobster: Swap shrimp for sweet crab meat or luscious lobster for a more decadent seafood experience. Both options will elevate your gratin to a whole new level.
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Vegetarian Delight: For a delightful vegetarian version, replace the seafood with sautéed mushrooms and spinach. The earthy mushrooms bring a deep flavor that complements the creamy sauce beautifully.
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Different Cheeses: Experiment with different types of cheese like feta for a tangy twist or smoked gouda for a hint of smokiness. Each choice will add a unique flavor profile to the gratin.
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Add Heat: Spice things up by adding a pinch of red pepper flakes or diced jalapeños to the garlic while sautéing. This adds a delightful kick without overpowering the dish.
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Grain-Free Option: Use crushed nuts, like almonds or pecans, instead of breadcrumbs for a crunchy, grain-free topping. This gives a wonderful texture and nutty flavor alongside the creamy filling.
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Herbed Twist: Mix in fresh herbs such as dill or tarragon for an aromatic infusion. These herbs pair exceptionally well with seafood, enhancing the overall taste of your gratin.
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Incorporate Veggies: Add diced bell peppers or zucchini to the seafood before baking for extra veggies. This not only adds flavor but also brings more color and nutrition to your dish.
Feel inspired? Each of these variations allows you to create a unique Seafood Gratin that speaks to your taste preferences. If you’re interested in more adaptations, check out some creative meat-free pasta dishes for future meals, and don’t forget to consider serving with a light salad to complement the rich flavors. Enjoy the cooking adventure!
How to Store and Freeze Seafood Gratin
Fridge: Store leftovers in an airtight container for up to 3-4 days. Heat in the oven at 350°F (175°C) for 15-20 minutes for best results.
Freezer: Seafood Gratin freezes well for up to 2-3 months. Cool completely, then wrap tightly in plastic wrap and aluminum foil before freezing.
Reheating: Thaw overnight in the fridge before reheating. To retain the creamy texture, reheat in the oven rather than the microwave.
Enjoy Later: This is a wonderful dish to make ahead, allowing you to savor the comforting flavors of Seafood Gratin whenever you wish!
Make Ahead Options
Preparing this Creamy Seafood Gratin ahead of time is a clever way to save time during busy weeknights! You can prep the seafood mixture (shrimp and scallops combined with the cream sauce) up to 24 hours in advance by storing it in an airtight container in the refrigerator. To prevent the seafood from becoming rubbery, ensure it’s just cooked through before assembling. Additionally, you can layer the cheese and breadcrumbs on top right before baking for maximum crunch. When ready to serve, simply preheat your oven, add the toppings, and bake for 15-20 minutes until golden and bubbly. This way, you can enjoy a delicious homemade meal with minimal effort!

Seafood Gratin Recipe FAQs
What type of shrimp is best for Seafood Gratin?
Absolutely! For the best flavor and texture, I recommend using fresh shrimp that is sweet and tender. Look for shrimp labeled as “wild-caught” for optimal taste; if you must use frozen, choose high-quality, sustainable options.
How should I store leftover Seafood Gratin?
Store any leftovers in an airtight container in the refrigerator for up to 3-4 days. Reheat them in the oven at 350°F (175°C) for about 15-20 minutes to regain that crispy topping and creamy goodness.
Can I freeze Seafood Gratin?
Very! Seafood Gratin freezes wonderfully. Allow it to cool completely, then wrap it tightly in plastic wrap followed by aluminum foil. It can be frozen for up to 2-3 months. When you’re ready to enjoy it, thaw in the fridge overnight, and reheat in the oven for the best results!
What if my Seafood Gratin is too watery?
If you find your Seafood Gratin turns out too watery, there are a couple of adjustments you can make. Consider cooking the cream sauce a bit longer on the stovetop to let some moisture evaporate before transferring it to the baking dish. You can also add a tablespoon of cornstarch mixed with a bit of water to thicken the sauce during cooking.
Is there a gluten-free option for the breadcrumbs?
Absolutely! You can easily substitute traditional breadcrumbs with gluten-free breadcrumbs made from rice, corn, or gluten-free oats. This way, your Seafood Gratin can be enjoyed by everyone at the table while still maintaining that delightful crunch!
Can I use other seafood besides shrimp and scallops?
Very much so! This dish is wonderfully versatile. Feel free to substitute shrimp with crab, lobster, or even fish fillets. The key is to ensure that your seafood is fresh and aligns with the creamy sauce, creating a delicious seafood medley.

Decadent Seafood Gratin for Cozy Nights In
Ingredients
Equipment
Method
- Preheat your oven to 400°F (200°C).
- Melt 2 tablespoons of butter over medium heat in a large skillet.
- Sauté 2 cloves of minced garlic for 1-2 minutes until fragrant.
- Add the shrimp and scallops, cooking for 3-4 minutes until opaque and tender.
- Pour in 2 cups of cream and season with salt and pepper. Mix until combined.
- Transfer the mixture into a baking dish, spreading it evenly.
- Sprinkle 1 cup of grated cheese over the seafood mixture, followed by breadcrumbs.
- Bake in the preheated oven for 15-20 minutes until golden and bubbly.
- Allow to cool slightly, then garnish with fresh parsley before serving.

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