Seafood Lasagna Shrimp Crab

Featured in Hearty Main Courses.

This layered lasagna features succulent shrimp and sweet crab surrounded by a velvety white sauce and three luxurious cheeses. Tender pasta sheets alternate with a creamy ricotta blend, flavorful seafood filling, and generous mozzarella topping. Lemon juice and fresh parsley add freshness, while the Parmesan brings depth. Baked bubbling and golden, it's a hearty, satisfying centerpiece for any meal—delicious served with garlic bread and a crisp salad. Leftovers keep well and reheat beautifully, so you can enjoy rich, decadent flavors again and again.

Casey
Updated on Sat, 05 Jul 2025 00:03:32 GMT
A plate of food with shrimp and cheese. Pin it
A plate of food with shrimp and cheese. | cookingwithcasey.com

Creamy and decadent seafood lasagna has always been the dish I save for a cozy weekend or a special dinner with friends. Packed with shrimp and crab, nestled in layers of velvety sauce and bubbling cheese, this recipe brings warmth and luxury to the table. It is comfort food at its finest for anyone who loves fresh-from-the-sea flavor.

Ingredients

  • Shrimp: choose large fresh or thawed frozen shrimp for sweetness and a snappy bite
  • Crab meat: both real and imitation work well choose lump style and always pick through for shells
  • Butter: brings richness to both the seafood and the sauce
  • Garlic: fresh garlic gives the filling more aroma
  • Salt and pepper: season all layers to bring out the seafood flavor
  • Lemon juice: a brightness boost and keeps everything fresh
  • Parsley: fresh chopped herbs make the layers sing try to use flat-leaf for best color
  • Ricotta cheese: creamy base for the filling choose whole milk for flavor
  • Egg: binds the ricotta and keeps the filling fluffy
  • Mozzarella cheese: melts beautifully and gives stretchy topping
  • Parmesan cheese: use the real deal for nutty complex flavor
  • Italian seasoning: a shortcut for those classic herb notes
  • All-purpose flour: thickens the white sauce smoothly
  • Whole milk: must be warm to prevent lumps in your sauce and keeps it extra creamy
  • Nutmeg: optional but adds just the right sweet spice note
  • Lasagna noodles: regular or oven-ready both work just make sure not to overcook if you boil them
  • Extra mozzarella and Parmesan: for crowning the top and baking to bubbly gold

Step-by-Step Instructions

Cook the Seafood:
In a large skillet melt the butter over medium heat and add the minced garlic stirring until you can really smell it about a minute. Add chopped shrimp season with a pinch of salt and a bit of pepper and sauté for three to four minutes just until the shrimp turn pink and opaque. Add the crab meat and a good squeeze of lemon juice. Let it cook together for another minute just to combine the flavors before removing from the heat and setting aside
Prepare the White Sauce:
Melt butter over medium heat in a medium saucepan then whisk in the flour to create a smooth paste. Let it cook for a minute or two so the flour loses its raw taste but does not get brown. Slowly pour in the warm milk whisking vigorously to integrate it smoothly. Keep whisking as it heats and thickens this step usually takes three to four minutes. Once thickened stir in the Parmesan with a little salt and black pepper and nutmeg if desired. Remove from heat and set aside
Cheese Mixture:
Combine the ricotta cheese egg mozzarella Parmesan and Italian seasoning in a mixing bowl. Mix thoroughly with a fork or spatula until light and smooth so the flavors get distributed evenly
Assemble the Lasagna:
Heat the oven to 375 degrees Fahrenheit or 190 degrees Celsius. Spread a thin layer of white sauce across the bottom of a 9 by 13 inch baking dish. Lay down one even layer of lasagna noodles over the sauce so the bottom is entirely covered. Spoon over one third of the ricotta mixture and smooth it out. Scatter over one third of the seafood mixture then drizzle some white sauce and sprinkle with shredded mozzarella. Repeat this process for three full layers finishing with a generous layer of white sauce and topping everything with the remaining mozzarella and Parmesan
Bake:
Cover the baking dish with foil and place it in the oven for twenty five minutes to let those layers meld and set. Remove the foil carefully and continue baking for another fifteen to twenty minutes until the sides are bubbling and the top is beautifully golden. Allow it to cool and set for ten minutes before slicing for perfect layers
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A fork is in a bowl of food. | cookingwithcasey.com

Storage Tips

Keep any leftovers tightly sealed in the refrigerator for up to three days. To freeze cut portions into single servings wrap well and freeze for up to two months. Always reheat gently in the oven or microwave until piping hot all the way through to keep the seafood tender

Ingredient Substitutions

If you cannot find lump crab substitute with chopped imitation crab or even extra shrimp. For dairy free needs try a plant-based ricotta and unsweetened oat milk for the white sauce. No ricotta on hand cottage cheese blended until smooth works in a pinch

Serving Suggestions

This lasagna is rich so I love to balance it with crisp salads dressed in lemon vinaigrette or blanched green beans. A warm garlic baguette is always a hit for soaking up any extra sauce and a glass of chilled white wine never hurts either

Cultural or Historical Context

Lasagna has deep roots in Italian tradition though seafood lasagna is more common in coastal regions where fresh catches are abundant. This American adaptation borrows classic béchamel and three-cheese layers for a celebratory dish that feels both nostalgic and new

Frequently Asked Questions

→ Can I use pre-cooked seafood?

Yes, pre-cooked shrimp or crab can be used. Add them after sautéing garlic to warm through and avoid overcooking.

→ What type of crab meat works best?

Both real lump crab meat and imitation crab are suitable. For richer taste and texture, lump crab is preferred.

→ How do I prevent watery lasagna?

Let the lasagna rest after baking before slicing. Use well-drained seafood and cook down excess moisture in sauces.

→ Can this be made ahead of time?

Absolutely. Assemble up to a day in advance, refrigerate, then bake when ready. Baking time may need slight adjustment.

→ Which sides pair well with this dish?

Serve with crisp green salads, garlic bread, or roasted vegetables to balance the rich, creamy flavors.

→ Is it possible to freeze leftovers?

Yes, freeze portions in airtight containers for up to 2 months. Thaw and reheat thoroughly before serving.

Seafood Lasagna with Shrimp Crab

Layers of tender seafood, creamy cheese, and rich white sauce for a comforting pasta favorite.

Prep Time
30 Minutes
Cook Time
45 Minutes
Total Time
75 Minutes
By: Casey

Category: Hearty Main Dishes

Difficulty: Intermediate

Cuisine: Italian-American

Yield: 8 Servings (One 33x23cm lasagna)

Dietary: ~

Ingredients

→ Seafood Filling

01 450g shrimp, peeled, deveined, and roughly chopped
02 225g lump crab meat
03 28g unsalted butter
04 2 garlic cloves, minced
05 Salt, to taste
06 Black pepper, to taste
07 30ml lemon juice
08 15ml fresh parsley, chopped (optional)

→ Cheese Mixture

09 425g ricotta cheese
10 1 large egg
11 100g mozzarella cheese, shredded
12 50g Parmesan cheese, grated
13 8g Italian seasoning

→ White Sauce

14 56g unsalted butter
15 32g all-purpose flour
16 720ml whole milk, warmed
17 100g Parmesan cheese, grated
18 Salt, to taste
19 Black pepper, to taste
20 0.5g ground nutmeg (optional)

→ Assembly

21 9–12 lasagna noodles (regular or oven-ready)
22 200g mozzarella cheese, shredded (for topping)
23 50g Parmesan cheese, grated (for topping)

Instructions

Step 01

Heat 28g butter in a large skillet over medium heat. Add minced garlic and sauté for 1 minute until fragrant. Add chopped shrimp, season with salt and black pepper, and cook for 3–4 minutes until pink. Add crab meat and lemon juice, stir and cook for 1 additional minute. Remove seafood from heat and set aside.

Step 02

Melt 56g butter in a saucepan over medium heat. Whisk in flour and cook for 1–2 minutes to form a roux. Gradually add warmed milk while whisking constantly to avoid lumps. Simmer for 3–4 minutes until the sauce thickens. Stir in Parmesan cheese, salt, black pepper, and nutmeg if using. Remove from heat.

Step 03

In a bowl, thoroughly mix ricotta cheese, egg, shredded mozzarella, grated Parmesan, and Italian seasoning until smooth and uniform.

Step 04

Preheat oven to 190°C. Spread a thin layer of white sauce over the bottom of a 33x23cm baking dish. Arrange lasagna noodles to cover the base. Spread one-third of the cheese mixture evenly. Distribute one-third of the seafood filling, drizzle with white sauce, and sprinkle with shredded mozzarella. Repeat for a total of three layers, ending with white sauce, mozzarella, and Parmesan on top.

Step 05

Cover dish with foil and bake on the centre rack for 25 minutes. Remove foil and continue baking for 15–20 minutes until the top is golden and bubbling. Allow lasagna to rest for 10 minutes before slicing and serving.

Notes

  1. Garnish before serving with fresh parsley for added colour and flavour.
  2. Seafood lasagna pairs beautifully with garlic bread and a crisp green salad.
  3. Store leftovers in a sealed container in the refrigerator for up to 3 days or freeze for up to 2 months. Reheat thoroughly before consuming.

Tools You'll Need

  • Large skillet
  • Saucepan
  • Mixing bowls
  • Whisk
  • 33x23cm baking dish
  • Aluminium foil

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains shellfish (shrimp, crab)
  • Contains dairy (milk, cheese, butter)
  • Contains egg
  • Contains gluten (lasagna noodles, flour)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 489
  • Total Fat: 24 g
  • Total Carbohydrate: 35 g
  • Protein: 34 g