White Sauce Seafood Lasagna with Tender Shrimp and Sweet Crab

Seafood Lasagna with Shrimp and Crab – Rich, Creamy, and Absolutely Luxurious
If you’re looking to elevate your dinner game, this Seafood Lasagna with Shrimp and Crab delivers serious wow factor. Layers of tender pasta, creamy garlic white sauce, juicy shrimp, sweet crab meat, and melted cheese come together in one indulgent, comforting dish.
It’s the kind of recipe that feels restaurant-worthy but can absolutely be made in your own kitchen. Perfect for holidays, dinner parties, or whenever you want to serve something special.
As someone who loves reinventing comfort food classics, this seafood twist on lasagna is one I return to again and again.
Why I Love This Recipe
Traditional lasagna is always a hit, but swapping in seafood creates a lighter yet luxurious flavor profile. The sweetness of crab and the delicate bite of shrimp pair beautifully with creamy béchamel sauce and mozzarella.
It’s elegant without being complicated — and it always earns compliments.
If you’re a fan of classic comfort dishes, you’ll also appreciate This Instant Pot Lasagna Is My Favorite Way to Make Comfort Food Fast.
Ingredients
For the Seafood Filling:
- 1 pound shrimp, peeled, deveined, and chopped
- 1 cup lump crab meat (picked over for shells)
- 2 tablespoons butter
- 3 cloves garlic, minced
- 1 teaspoon Italian seasoning
- Salt and black pepper to taste
For the Cream Sauce:
- 4 tablespoons butter
- 4 tablespoons all-purpose flour
- 3 cups milk (warm)
- ½ cup heavy cream
- 1 cup grated Parmesan cheese
- ½ teaspoon nutmeg
- Salt and pepper to taste
For Assembly:
- 9 lasagna noodles (cooked al dente)
- 2 cups shredded mozzarella cheese
- 1 cup ricotta cheese
- Fresh parsley (optional garnish)
Ingredient Notes and Substitutions
- Fresh or frozen shrimp both work — just thaw and pat dry first.
- Imitation crab can be used in a pinch, though lump crab offers superior flavor.
- Add spinach for a pop of color and added nutrition.
- Swap mozzarella for Gruyère for a deeper flavor profile.
Serve this dish as the centerpiece of a dinner party alongside This Baked Brie Appetizer Is My Favorite Effortless Way to Impress Guests.
Step-by-Step Instructions
- Cook the Seafood
In a skillet, melt butter over medium heat. Add garlic and sauté for 30 seconds. Stir in shrimp, season with salt, pepper, and Italian seasoning. Cook until shrimp turns pink (about 3–4 minutes). Gently fold in crab meat and remove from heat. - Prepare the Cream Sauce
In a saucepan, melt butter over medium heat. Whisk in flour and cook for 1–2 minutes. Gradually whisk in warm milk and cream. Cook until thickened, stirring constantly. Add Parmesan, nutmeg, salt, and pepper. Stir until smooth. - Preheat Oven
Preheat oven to 375°F (190°C). - Layer the Lasagna
In a greased 9×13-inch baking dish, spread a thin layer of cream sauce. Add lasagna noodles, seafood mixture, ricotta dollops, mozzarella, and more sauce. Repeat layers, finishing with mozzarella and sauce on top. - Bake
Cover with foil and bake for 25 minutes. Remove foil and bake an additional 15–20 minutes until bubbly and golden. - Rest Before Serving
Let lasagna rest for 10–15 minutes before slicing.
Tips for Perfect Seafood Lasagna
- Don’t overcook the shrimp — they finish cooking in the oven.
- Let the lasagna rest so layers set properly.
- Use freshly grated Parmesan for smoother sauce.
- Drain seafood well to avoid excess moisture.
Serving Suggestions and Pairings
This lasagna pairs beautifully with fresh salads, garlic bread, and light cocktails.
For a refreshing drink, try Refreshing Strawberry Mojito Recipe – Perfect for Summer Gatherings. The citrus and mint balance the richness of the dish.
Round out your meal with:
- This Baked Brie Appetizer Is My Favorite Effortless Way to Impress Guests
- These Chicken Enchiladas Are My Go-To for Cozy Crowd-Pleasing Dinners (for another comfort classic idea)
- Finish with This Grasshopper Pie Is My Favorite No-Bake Dessert with a Mint Chocolate Twist
Nutritional Information (Per Serving – Approximate)
- Calories: 520
- Fat: 28g
- Carbohydrates: 38g
- Protein: 32g
- Sodium: 780mg
Values will vary depending on ingredients used.
Storage and Leftover Tips
- Store covered in the refrigerator for up to 3 days.
- Reheat individual slices in the microwave or oven.
- Freeze tightly wrapped portions for up to 2 months.
More Recipes You’ll Love
If you’re in the mood for comforting, crowd-pleasing meals, check out:
- This Instant Pot Lasagna Is My Favorite Way to Make Comfort Food Fast
- These Chicken Enchiladas Are My Go-To for Cozy Crowd-Pleasing Dinners
- This Baked Brie Appetizer Is My Favorite Effortless Way to Impress Guests
- This Grasshopper Pie Is My Favorite No-Bake Dessert with a Mint Chocolate Twist
Final Thoughts
Seafood Lasagna with Shrimp and Crab is the perfect combination of comfort and elegance. It’s creamy, satisfying, and impressive enough for special occasions — yet simple enough for a cozy weekend dinner.
If you give this recipe a try, I’d love to hear how it turned out. Leave a comment, share your photos, and follow along for more approachable recipes that bring bold flavors to your table.
Happy cooking! 🦐🦀✨



