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Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe

Published: Oct 15, 2025 by Amelia · This post may contain affiliate links · Leave a Comment

Jump to Recipe· 3.9 from 86 reviews

If you are looking to indulge in a dish that perfectly balances rich flavors and luxurious textures, then you must try this Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe. This sumptuous meal features jumbo pasta shells loaded with a savory blend of shrimp, scallops, and lump crab meat, all nestled in a velvety, Old Bay-spiced béchamel sauce. Each bite offers a delicate seafood sweetness paired with a creamy sauce that’s both comforting and elegant—making it an ideal centerpiece for special occasions or a memorable weeknight dinner!

Ingredients You'll Need

The image shows a close-up view of large pasta shells arranged in a white dish on a white marbled surface. Each pasta shell is filled with a creamy mixture containing small chunks of light beige colored ingredients, likely a mix of soft cheese and diced pieces of a pale protein, with some green herb specks throughout. The pasta shells are pale yellow with a slightly ridged texture on the outside and are stuffed generously, with the filling slightly overflowing from the openings. The dish is filled tightly with multiple shells in rows, showing a consistent filling texture and color in each one. Photo taken with an iphone --ar 4:5 --v 7

The beauty of this recipe lies in its simple yet thoughtfully chosen ingredients. Each component plays a vital role, bringing layers of flavor, texture, and color that come together harmoniously in every spoonful.

  • Nonstick cooking spray: Essential for preventing your shells from sticking to the baking dish while making clean-up easier.
  • Jumbo pasta shells (6 ounces): The perfect vessel to hold all that luscious seafood filling.
  • Unsalted butter (1 tablespoon + 3 tbsp): Adds richness and helps create a smooth roux for the béchamel sauce.
  • Yellow onion (½ small, finely diced): Provides a mellow sweetness and depth for the filling.
  • Garlic (4 cloves, finely chopped or grated): Infuses the seafood mixture with a fragrant punch.
  • Shrimp (8 ounces, peeled and deveined): Adds a tender, slightly sweet seafood note.
  • Bay scallops (8 ounces): Offers a delicate texture and mild sweetness that complements the shrimp beautifully.
  • Lump crab meat (8 ounces): Brings a rich, buttery taste and a luxurious feel to the filling.
  • Fresh parsley (¼ cup, finely chopped): Adds a burst of color and a fresh herbal brightness.
  • Mayonnaise (⅓ cup): Helps bind the seafood filling while adding creamy moisture.
  • Dijon mustard (1 tbsp): Introduces a subtle tanginess to balance the richness.
  • Old Bay seasoning (2 teaspoon total): The secret spice blend that enhances the seafood flavors perfectly.
  • Fresh lemon juice (½ lemon): Lifts the entire dish with a bright citrus zing.
  • Kosher salt and black pepper: To taste for seasoning both filling and sauce.
  • All-purpose flour (3 tbsp): For thickening the béchamel sauce to that perfect creamy consistency.
  • Clam juice (1 cup): Infuses the sauce with subtle oceanic notes, making it truly seafood-forward.
  • Half and half (2 cups): The creamy liquid base that makes the béchamel so luscious.
  • Panko breadcrumbs (½ cup): Brings a crispy, golden topping to contrast the creamy filling.

How to Make Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe

Step 1: Prep the Pasta and Oven

Start by preheating your oven to 350°F and lightly coating a 9x13-inch baking dish with nonstick spray—this is where all the magic will come together. Cook the jumbo shells in generously salted boiling water until just shy of al dente. It's important not to overcook them since they'll continue baking later, soaking up all that creamy seafood goodness.

Step 2: Cook the Seafood Filling

In a large skillet, melt butter and gently sauté finely diced onion until soft and golden—this sweetens the base and creates a depth of flavor. Add garlic and cook until fragrant before tossing in the chopped scallops and shrimp for a quick sear. Transfer this aromatic mixture to a bowl and fold in lump crab meat, fresh parsley, mayonnaise, Dijon mustard, Old Bay seasoning, lemon juice, and seasoning with salt and pepper. This creates the rich, perfectly balanced filling that you'll stuff into each shell.

Step 3: Make the Seafood Béchamel Sauce

Clean the skillet, then melt more butter to whisk in flour and form a smooth roux. Slowly incorporate the clam juice and half and half while whisking vigorously to avoid lumps. Add Old Bay seasoning and let it simmer until the sauce thickens into a silky béchamel that coats the back of a spoon. This luscious sauce ties everything together with creamy, savory goodness.

Step 4: Prepare the Crispy Breadcrumbs

Mix panko breadcrumbs with melted butter and season with salt and pepper. These breadcrumbs will give a delightful crunch and golden finish once baked, adding textural contrast to the creamy shells.

Step 5: Assemble and Bake

Spoon a generous cup of béchamel sauce at the bottom of your baking dish, then carefully stuff each cooked pasta shell with the seafood filling. Arrange them in a single layer and pour the remaining béchamel sauce over the top, fully enveloping the shells. Sprinkle the buttery panko breadcrumbs evenly to form a crispy crust. Bake for 30 minutes until bubbly and golden, then optionally broil for a few minutes for an irresistible browned top.

How to Serve Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe

The dish shows two pieces of golden-brown crispy baked pasta shells filled with creamy white cheese on the left side of a white bowl, with green chopped herbs sprinkled on top and some salt crystals around. On the right side of the bowl, there is a mix of fresh green and dark purple lettuce leaves that look fresh and crisp. A gold fork leans inside the bowl behind the food. The background is a white marbled texture. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Fresh finely chopped parsley or chives are wonderful garnishes to add a fresh, herbaceous pop of color and flavor. A light sprinkling of lemon zest can also brighten the dish further, making every bite feel lively and fresh despite the richness.

Side Dishes

This creamy seafood pasta pairs beautifully with light, crisp sides—think a simple mixed green salad tossed with red wine vinaigrette or a citrusy arugula salad. Steamed green vegetables such as asparagus or broccolini also complement the dish, balancing the decadence with a hint of crunch and bitterness.

Creative Ways to Present

Serve the stuffed shells in shallow bowls to show off the creamy sauce and golden breadcrumb topping. You could also plate individual servings on square white plates, drizzling extra béchamel around the edges and sprinkling fresh herbs for a restaurant-worthy presentation that will impress guests.

Make Ahead and Storage

Storing Leftovers

Leftover creamy baked seafood stuffed shells keep beautifully in an airtight container in the refrigerator for up to 3 days. The flavors deepen, making it even more delicious the next day!

Freezing

If you want to save some for later, freeze the unbaked stuffed shells covered tightly with foil and plastic wrap. They’ll maintain their quality for up to 2 months. When ready to eat, bake directly from frozen, adding additional cooking time until heated through and bubbly.

Reheating

Reheat refrigerated leftovers in the oven at 350°F until warmed through to maintain the creamy texture and crispy topping. Avoid microwaving if possible, as it can make the béchamel sauce separate and the breadcrumbs lose their crunch.

FAQs

Can I use other seafood instead of shrimp, scallops, and crab?

Absolutely! Feel free to mix in lobster, mussels, or even firm white fish. Just ensure the seafood is cooked or can cook quickly so it stays tender in the oven. The beauty of this Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe is its versatility.

What can I substitute for clam juice in the béchamel sauce?

If clam juice isn’t available, a seafood or chicken broth works well as a substitute. For an extra seafood flavor, you can also use a mix of broth and a splash of white wine or a seafood stock cube dissolved in water.

Is it okay to prepare this dish a day in advance?

Yes! You can prepare and assemble the stuffed shells up to a day ahead. Store them covered in the refrigerator and bake when ready to serve. This can make dinner much easier on a busy day or when hosting guests.

How do I prevent the pasta shells from falling apart?

Cooking the jumbo shells just under al dente is key because they finish cooking in the oven without becoming mushy. Also, handle them gently when stuffing to keep their perfect shape intact.

Can I make this recipe dairy-free?

For a dairy-free take, you can substitute butter with plant-based margarine, use a non-dairy milk like almond or oat milk for the béchamel (making a roux with a bit of cornstarch), and skip the mayonnaise or find a vegan alternative. Just note that the flavor and texture will differ slightly but can still be delicious!

Final Thoughts

There is something truly special about Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe that makes it a standout for any occasion. It’s the perfect combination of indulgence, comfort, and a touch of elegance all rolled into one dish. Whether you’re cooking for a loved one or treating yourself to a meal worth savoring, this recipe is sure to impress and delight. Trust me, once you try it, you’ll want to make it a regular in your dinner rotation!

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Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe

Creamy Baked Seafood Stuffed Shells with Béchamel Sauce Recipe

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3.9 from 86 reviews

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This creamy baked seafood-stuffed shells recipe features jumbo pasta shells filled with a savory mixture of shrimp, scallops, and lump crab meat. The seafood filling is combined with fresh herbs, mayonnaise, and Dijon mustard, then baked in a luscious Old Bay-spiced béchamel sauce until bubbly and golden. Perfect for special occasions or a comforting weeknight meal, this decadent pasta dish delivers rich flavors with a satisfying crispy breadcrumb topping.

  • Total Time: 1 hour 30 minutes
  • Yield: Serves 6-8

Ingredients

For the Stuffed Shells:

  • Nonstick cooking spray
  • 6 ounces jumbo pasta shells (approx. 22 shells)
  • 1 tablespoon unsalted butter
  • ½ small yellow onion, finely diced
  • 4 cloves garlic, finely chopped or grated
  • 8 ounces shrimp, peeled, deveined, and cut into ½-inch pieces
  • 8 ounces bay scallops, cut into ½-inch pieces if needed
  • 8 ounces lump crab meat
  • ¼ cup finely chopped fresh parsley
  • ⅓ cup mayonnaise
  • 1 tablespoon Dijon mustard
  • 1 teaspoon Old Bay seasoning
  • ½ lemon, juiced
  • Kosher salt and ground black pepper, to season

For the Seafood Béchamel Sauce:

  • 3 tablespoons unsalted butter
  • 3 tablespoons all-purpose flour
  • 1 cup clam juice
  • 2 cups half and half
  • 1 teaspoon Old Bay seasoning
  • Kosher salt and ground black pepper, to season

For the Crispy Breadcrumbs:

  • ½ cup panko breadcrumbs
  • 2 tablespoons unsalted butter, melted
  • Kosher salt and ground black pepper, to season

Instructions

  1. Preheat and prepare dish: Preheat the oven to 350°F with a rack in the center. Lightly coat a 9×13-inch oven- and broiler-safe baking dish with nonstick cooking spray. If using frozen seafood, thaw thoroughly and pat dry with paper towels.
  2. Boil the pasta: Bring a large pot of generously salted water to a boil. Add the jumbo pasta shells and cook 2-3 minutes less than the al dente cooking time indicated on the package to avoid overcooking during baking. Drain the shells, but do not rinse, and set aside.
  3. Prepare the seafood filling: Melt 1 tablespoon unsalted butter in a large skillet over medium heat. Add the finely diced yellow onion, season with salt and pepper, and cook for 4-5 minutes until softened and golden. Stir in the chopped garlic and cook for 1-2 minutes until fragrant. Add the scallops, cooking for 1 minute, then add the shrimp and cook for an additional 30 seconds. Transfer this mixture to a large mixing bowl. Add lump crab meat, chopped parsley, mayonnaise, Dijon mustard, Old Bay seasoning, and lemon juice. Season with salt and pepper and mix gently to combine. Set aside.
  4. Make the seafood béchamel sauce: Using the same skillet, melt 3 tablespoons unsalted butter over medium heat. Whisk in 3 tablespoons all-purpose flour, stirring vigorously to eliminate lumps and cooking the roux for 1-2 minutes until golden. Slowly whisk in 1 cup clam juice, 2 cups half and half, and 1 teaspoon Old Bay seasoning. Simmer the sauce for 3-4 minutes, stirring often until thickened. Remove from heat, taste, and adjust seasoning with salt and pepper as needed.
  5. Prepare breadcrumb topping: In a small bowl, combine ½ cup panko breadcrumbs with 2 tablespoons melted unsalted butter. Season with salt and pepper, then toss to combine thoroughly. Set aside.
  6. Assemble the shells: Spread 1 cup of the seafood béchamel sauce evenly over the bottom of the prepared baking dish. Generously stuff each jumbo pasta shell with the seafood filling and arrange them in a single layer over the sauce. Pour the remaining béchamel sauce evenly over the stuffed shells and sprinkle the buttered panko breadcrumbs on top.
  7. Bake the shells: Bake in the preheated oven for 30 minutes until the sauce is bubbling and the breadcrumb topping is golden brown. For extra browning, broil on the center rack for 2-3 minutes, watching carefully to prevent burning.
  8. Rest and serve: Let the baked stuffed shells rest for 5 minutes before serving. Garnish with additional finely chopped fresh herbs such as parsley or chives if desired, and serve alongside a light green salad for a complete meal. Enjoy!

Notes

  • If using frozen seafood, ensure it is fully thawed and patted dry to prevent excess moisture in the filling.
  • Cooking the pasta shells slightly under al dente helps them hold their shape during baking without becoming mushy.
  • Clam juice can typically be found canned in the seafood section of most grocery stores; it adds a lovely briny flavor to the béchamel.
  • For added richness, you can substitute half and half with whole milk or light cream according to preference.
  • Broiling the dish is optional but gives a delightful crispy, golden breadcrumb crust on top.
  • To make ahead, you can assemble the dish and refrigerate for up to 24 hours before baking. Add a few extra minutes to baking time if baking straight from chilled.
  • Author: Amelia
  • Prep Time: 45 minutes
  • Cook Time: 45 minutes
  • Category: Main Course
  • Method: Baking
  • Cuisine: American

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Hi, I’m so happy you’re here!

I'm Amelia, a 27-year-old recipe developer and former restaurant line cook living in Portland, Oregon. This is where I share recipes that actually work in real kitchens, tested by someone who's cooked through the chaos of Friday night dinner rush and the reality of weeknight exhaustion.

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