Creamy Seafood Lasagna with Shrimp and Crab

This creamy seafood lasagna layers tender shrimp, sweet shredded crab, and a rich béchamel sauce under a bubbly blanket of melted mozzarella cheese. It is the ultimate comfort food for any special occasion or cozy weekend dinner. Every bite delivers a perfect balance of savory seafood and velvety cream, making this dish an instant favorite for seafood lovers.

Lasagna is a beloved classic, but swapping out the traditional meat sauce for a rich seafood filling elevates the entire experience. This recipe combines succulent butter-sautéed pink shrimp and delicate shredded crabmeat in a silky, prepared béchamel sauce.

Layered between tender pasta sheets and topped with plenty of mozzarella, this dish bakes to golden perfection. It is rich, satisfying, and brings an elegant restaurant-quality meal right to the dining table without requiring overly complex techniques.

Ingredients

Why this recipe works

Sautéing the shrimp in fresh butter before assembling ensures they develop a rich, savory depth of flavor that carries throughout the entire lasagna. Butter acts as a natural flavor bridge, connecting the sweet notes of the shellfish with the creamy elements of the béchamel sauce.

Pre-cooking the shrimp also prevents them from releasing excess water into the pasta layers during the baking process, which keeps the final lasagna beautifully structured instead of soggy or watery.

Using a classic béchamel sauce instead of a heavy ricotta mixture provides a much smoother, more luxurious texture that complements delicate seafood perfectly. Ricotta can sometimes feel grainy or overpower the subtle sweetness of crab and shrimp, whereas a velvety white sauce coats every noodle evenly.

As the lasagna bakes in the oven, the béchamel melds with the natural juices of the seafood, creating an incredibly rich, unified sauce that binds all the layers together beautifully.

Notes and substitutions

For the best results, use high-quality wild-caught shrimp and real lump crabmeat. While canned crab can work in a pinch, fresh or refrigerated pasteurized claw or lump crabmeat offers a vastly superior flavor and texture that elevates the dish. Make sure to drain the crabmeat thoroughly and pick through it carefully to remove any remaining bits of shell before layering it into the lasagna. For the shrimp, medium-sized ones work best as they distribute evenly.

The choice of cheese and sauce is crucial for achieving that signature golden, stretchy top layer and creamy interior. A high-quality store-bought or prepared béchamel sauce saves time while maintaining a rich, velvety texture.

For the cheese, low-moisture, whole-milk mozzarella provides the perfect melt and stretch without adding excess water to the casserole. Grating your own mozzarella from a block ensures a velvety, bubbly finish that looks spectacular on the plate.

• shredded lump crabmeat: claw crabmeat or chopped high-quality imitation crab
• béchamel sauce: a rich garlic cream sauce or Alfredo sauce for a different flavor profile

Equipment

• 9x13-inch baking dish
• large skillet
• saucepan
• whisk
• aluminum foil
• digital food thermometer