Seafood Lasagna Shrimp Crab

Featured in Hearty Main Courses.

This satisfying seafood lasagna features tender shrimp and sweet crab layered between pasta sheets, a creamy Parmesan sauce, and plenty of melty cheese. Every bite captures the ocean's flavors paired with Italian comfort, making it perfect for festive dinners or impressing guests. Subtle garlic, red pepper, and fresh herbs ensure each forkful is savory and rich, while a bubbling golden top adds irresistible appeal. Serve with garlic bread and a crisp salad for a well-rounded meal that's sure to delight seafood lovers.

Casey
Updated on Thu, 03 Jul 2025 12:32:29 GMT
A casserole dish with a fork and a bowl of herbs. Pin it
A casserole dish with a fork and a bowl of herbs. | cookingwithcasey.com

This seafood lasagna layers tender shrimp and crab with creamy cheeses and a luscious white sauce for a comforting showstopper. Every bite is velvety and packed with rich coastal flavor. It is one of my favorite dishes when I want something a little fancy but totally satisfying and homey.

I first tried this recipe for a special birthday dinner and it quickly became my go-to comfort dish on chilly evenings. People always ask for seconds and the leftovers are just as delicious.

Ingredients

  • Lasagna noodles: look for ones that hold their structure after boiling fresh pasta sheets also work great
  • Cooked shrimp: adds juicy bites and a slightly sweet seafood flavor choose medium shrimp and be sure they are peeled and deveined
  • Crab meat: gives a delicate richness fresh lump crab is best but drained canned works in a pinch
  • Butter: helps create a flavorful base for the cream sauce use real butter for best taste
  • Garlic: brightens everything up fresh cloves make a big difference
  • All-purpose flour: thickens the sauce and keeps it silky
  • Whole milk and heavy cream: together they make the sauce incredibly smooth and rich
  • Parmesan cheese: adds a nutty savory depth always grate it fresh for optimal melting
  • Mozzarella cheese: creates gooey cheesy layers choose the best quality you can find
  • Ricotta cheese: brings creaminess and a nice contrast layer whole milk ricotta is extra smooth
  • Chopped fresh parsley: offers color and a fresh pop of flavor optional but recommended
  • Salt and black pepper: essential for seasoning taste and adjust as you go
  • Red pepper flakes: bring a gentle heat use only if you like a little kick

Step-by-Step Instructions

Prepare the Sauce:
Melt butter in a large saucepan over medium heat until it is foamy but not browned Add minced garlic and cook for about one minute just until the aroma fills your kitchen Stir in the flour and whisk steadily so there are no lumps Let this cook for another full minute to build a subtle nutty flavor Now slowly pour in the milk and heavy cream while whisking constantly Keep whisking and cook until the mixture thickens to a sauce that coats the back of a spoon
Add the Cheese:
Lower the heat as the sauce thickens Sprinkle in the freshly grated Parmesan and keep stirring until it melts into the sauce Add salt and plenty of cracked black pepper Taste and add a pinch of red pepper flakes if you want a gentle back note of spice
Seafood Mixture:
Gently fold the cooked shrimp and crab into the warm sauce Stir just until seafood is evenly coated Let it all simmer for two minutes to meld the flavors but do not overcook Remove pan from heat
Assemble the Lasagna:
Set your oven to 375 degrees F to preheat Grab a 9 by 13 inch baking dish and spoon a thin layer of the seafood sauce to cover the bottom Arrange three lasagna noodles over the sauce Spoon on more sauce dot with dollops of ricotta and scatter mozzarella cheese evenly Repeat these layers two more times Finish with a final generous layer of sauce and mozzarella across the top for a bubbly top
Bake:
Cover the baking dish tightly with foil to prevent drying out Bake for twenty five minutes to allow everything to heat through Remove foil and bake an additional ten to fifteen minutes until the cheese is golden and edges are bubbling
Garnish and Serve:
Let the lasagna sit for ten minutes before slicing It will set up and be easier to serve Sprinkle with fresh parsley if you have it This dish is absolutely delicious with garlic bread and a crisp green salad
A plate of food with a fork on it. Pin it
A plate of food with a fork on it. | cookingwithcasey.com

My favorite part is the sweet brininess of the crab with the creamy sauce It reminds me of beach vacations with my family when my dad would show off his famous seafood lasagna Everyone would gather in the kitchen to sneak a taste before dinner

Storage Tips

Cool leftovers completely before covering tightly with foil or plastic wrap Keep refrigerated up to three days For longer storage slice and freeze portions in airtight containers Lasagna reheats nicely in the oven or microwave just be sure to cover so it stays moist

Ingredient Substitutions

If you cannot find crab swap with extra shrimp or even a bit of scallops in small pieces For a lighter sauce substitute half and half for the cream Try part skim ricotta or mozzarella for a slightly lighter bite If you need gluten free use your favorite GF lasagna noodles and a one for one gluten free flour blend in the sauce

Serving Suggestions

Garlic bread is almost required for soaking up the creamy sauce I also love serving this with roasted asparagus or a tangy arugula salad A glass of crisp white wine like Sauvignon Blanc or Pinot Grigio pairs beautifully making dinner feel extra special

Cultural Historical Context

Seafood lasagna is not traditional to Italy but takes inspiration from northern Italian cream sauces and American coastal cooking It is popular in home kitchens for festive occasions and feels especially right in the spring or early summer when seafood is freshest

Frequently Asked Questions

→ Can I use frozen seafood for this dish?

Yes! Thaw and drain any frozen shrimp or crab thoroughly to prevent excess moisture affecting the sauce and texture.

→ Is there a substitute for crab meat?

Imitation crab can work, or substitute with extra shrimp or even cooked scallops for a different seafood pairing.

→ How can I make this ahead of time?

Assemble fully, cover, and refrigerate up to 24 hours before baking. Bake as directed, adding a few extra minutes if needed.

→ What sides complement this main dish?

Garlic bread, a crisp green salad, or roasted vegetables pair beautifully, balancing the creamy, rich flavors.

→ How should leftovers be stored?

Keep tightly covered in the refrigerator for up to 3 days. Reheat portions gently in the oven or microwave until warmed through.

Seafood Lasagna Shrimp Crab

Rich layers of pasta, seafood, and cheese deliver comforting coastal flavors, perfect for sharing with family or friends.

Prep Time
25 Minutes
Cook Time
40 Minutes
Total Time
65 Minutes
By: Casey

Category: Hearty Main Dishes

Difficulty: Intermediate

Cuisine: Italian-American

Yield: 8 Servings (One 23x33 cm lasagna)

Dietary: ~

Ingredients

→ Pasta

01 9 sheets lasagna noodles, cooked and drained

→ Seafood

02 480 grams cooked shrimp, peeled and deveined
03 210 grams crab meat, fresh or canned, drained

→ Dairy

04 2 tablespoons unsalted butter
05 590 millilitres whole milk
06 240 millilitres heavy cream
07 100 grams grated Parmesan cheese
08 200 grams shredded mozzarella cheese
09 250 grams ricotta cheese

→ Aromatics & Seasonings

10 3 cloves garlic, minced
11 3 tablespoons all-purpose flour
12 Salt, to taste
13 Black pepper, to taste
14 Pinch of red pepper flakes, optional
15 1 tablespoon chopped fresh parsley, optional

Instructions

Step 01

Melt butter in a large saucepan over medium heat. Add minced garlic and sauté for 1 minute until fragrant. Stir in flour and cook for an additional minute while whisking constantly.

Step 02

Gradually add whole milk and heavy cream to the saucepan, whisking continuously. Cook and stir until the mixture becomes smooth and begins to thicken.

Step 03

Lower heat and fold in grated Parmesan cheese. Season with salt, black pepper, and red pepper flakes if using. Stir until the cheese is melted and the sauce is well combined.

Step 04

Gently fold the cooked shrimp and crab meat into the sauce. Simmer for 2 minutes, then remove the saucepan from heat.

Step 05

Preheat oven to 190°C. Spread a thin layer of seafood sauce on the bottom of a 23x33 cm baking dish. Place 3 lasagna noodles over the sauce. Add more seafood sauce, spoonfuls of ricotta, and sprinkle with mozzarella. Repeat the layers two more times, finishing with a layer of sauce and remaining mozzarella on top.

Step 06

Cover the dish with foil and bake for 25 minutes. Remove foil and bake for an additional 10 to 15 minutes until the lasagna is bubbling and golden brown on top.

Step 07

Allow the lasagna to rest for 10 minutes before slicing. Garnish with chopped fresh parsley if desired and serve.

Notes

  1. Letting the lasagna rest after baking ensures clean slices and allows flavors to meld.

Tools You'll Need

  • Large saucepan
  • Whisk
  • 23 x 33 cm ovenproof baking dish
  • Aluminium foil
  • Sharp knife

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains shellfish (shrimp, crab), dairy, and gluten.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 525
  • Total Fat: 28 g
  • Total Carbohydrate: 33 g
  • Protein: 35 g