Creamy Seafood Lasagna layers shrimp, crab, ricotta, and parmesan béchamel for a luxurious, crowd-pleasing bake ready in about 50 minutes.
If you love classic lasagna but crave something lighter and coastal, this pan is your new favorite. Tender noodles, a velvety white sauce, and a ricotta-mozzarella filling cradle sweet bites of shrimp and crab—all finished with golden, bubbly cheese.
You’ll build it like the Italian original, just with a silky parmesan béchamel instead of red sauce. The steps are simple: cook noodles, whisk the sauce, stir together the cheese filling, layer generously, then bake until the edges are beautifully bronzed. Let it rest so every slice stands tall.
Step-by-Step Seafood Lasagna
- Cook the noodles. Boil lasagna sheets in salted water until flexible but shy of fully tender; drain and keep separated so they don’t stick.
- Make the béchamel. Melt butter, whisk in flour, then slowly stream in milk until thick and smooth. Off heat, stir in parmesan, plus salt and white pepper for gentle warmth.
- Mix the ricotta layer. Combine ricotta, egg, minced garlic, mozzarella, and chopped parsley until creamy and spreadable.
- Prep the seafood. Use cooked shrimp (chopped if large) and lump crab; pat dry so the lasagna doesn’t turn watery.
- Layer it up. Spread a slick of sauce in a greased 9×13 pan, then: noodles → ricotta → seafood → sauce. Repeat for three stacked layers. Finish with remaining sauce and a snowfall of mozzarella and parmesan.
- Bake and rest. Cover and bake at 350°F until steamy, then uncover to brown the top. Rest 15–20 minutes before slicing to set the layers.
Can I use no-boil noodles?
Yes, but add a touch more sauce. Keep the béchamel slightly looser and ensure each noodle is well coated. Bake covered a bit longer so the dry sheets hydrate, then uncover to brown without drying the edges.
What seafood works best?
A mix of cooked shrimp and crab offers sweetness and texture. You can also fold in cooked scallops or flaked white fish. Keep pieces bite-size and well drained so they distribute evenly and don’t water down the sauce.
How do I stop a watery lasagna?
Dry seafood thoroughly, cook noodles just shy of al dente, and let the casserole rest before cutting. A properly thickened béchamel (coats a spoon) also helps—whisk patiently and avoid thinning it too much with extra milk.
Can I assemble it ahead?
Absolutely. Layer the lasagna, cover, and refrigerate up to 24 hours. Bake straight from the fridge, adding a few extra minutes. For longer storage, freeze unbaked; thaw overnight, then bake until hot and bubbling throughout.
Can I swap in Alfredo sauce?
You can, though homemade béchamel with parmesan is lighter and less oily. If using Alfredo, loosen with a splash of milk so layers stay creamy, not dense, and avoid overly garlicky jars that can overpower delicate seafood.
Seafood Lasagna Recipe Ingredients
- Lasagna noodles — Structure for clean, tall slices; cook until just flexible.
- Butter & flour — The roux that thickens a silky béchamel.
- Milk — Builds the creamy base; whole milk gives the best body.
- Parmesan — Salty nuttiness in the sauce and on top for browning.
- Ricotta & egg — Fluffy, custardy middle that holds layers together.
- Garlic & mozzarella — Savory aroma and melty pull in every bite.
- Parsley — Fresh, herbal lift against the richness.
- Cooked shrimp & crab — Sweet, ocean-forward filling; pat dry for best texture.
- Salt & white pepper — Gentle seasoning that keeps the sauce pale and elegant.
Chef’s Tips for Creamy Seafood Lasagna
- Season the sauce, not just the top. Taste the béchamel; it should be delicious before layering.
- Mind the moisture. Dry seafood and avoid overcooking noodles—the rest time finishes them perfectly.
- Go for even layers. Use a small offset spatula to spread ricotta edge to edge for tidy slices.
Perfect Pairings
- Garlic-lemon broccolini for bright, crisp contrast.
- Simple arugula salad with shaved fennel and light vinaigrette.
- Warm ciabatta to swipe through the creamy edges and browned cheese.
Storage & Reheating
Cool completely. Refrigerate, tightly covered, up to 2 days (seafood stays best within this window). Reheat covered at 325°F until hot, then uncover briefly to re-crisp the top. To freeze, wrap whole or sliced portions well for up to 2 months; thaw overnight and reheat gently, adding a spoonful of milk under the foil if the layers seem dry.
Easy Creamy Seafood Lasagna
Ingredients
- 1 pound of cooked and chopped shrimp cut smaller if large in size
- 2 teaspoons finely minced garlic
- ¼ tablespoon ground white pepper
- ½ cup fresh parsley finely chopped
- 1 egg lightly beaten
- ½ tablespoon fine salt
- 3 cups whole milk
- 1 pound dried lasagna sheets
- 1 pound crab meat fully cooked
- 4 tablespoons unsalted butter
- ¼ cup plus 1 tablespoon all-purpose flour
- 1 container 15 oz of ricotta cheese
- 2½ cups shredded mozzarella cheese separated
- 1 cup grated Parmesan cheese divided
Instructions
- Boil the lasagna noodles following the instructions on the package. Once cooked, drain them thoroughly and arrange individually to prevent sticking.
- In a medium saucepan set over moderate heat, melt the butter. Sprinkle in the flour and whisk until a smooth paste forms. Slowly pour in the milk, stirring constantly until the mixture becomes thickened. Remove from heat and stir in ½ cup of the Parmesan along with the salt and white pepper.
- In a separate bowl, blend the ricotta cheese with the egg, garlic, 2 cups of the mozzarella, and chopped parsley until fully combined.
- Gently fold together the shrimp and crab meat in another bowl, ensuring even distribution.
- Lightly grease a 9 x 13-inch baking dish. Spread about 1 cup of the prepared white sauce on the bottom. Lay three noodles side by side over the sauce. Spoon over one-third of the ricotta mixture and spread evenly, then layer with one-third of the seafood mixture. Repeat this layering process twice more.
- Pour the remaining sauce over the top layer and sprinkle with the remaining mozzarella and Parmesan cheese.
- Cover the baking dish with foil and place in a preheated 350°F (175°C) oven. Bake for 30 minutes. Remove the foil and continue baking for an additional 10 minutes or until the top is golden and bubbling.
- Let the lasagna sit for 20 minutes before slicing to allow it to firm up and set properly.