Amazing Seafood Lasagna with Shrimp and Crab

October 16, 2025
Written By Eleanor Vance

Eleanor "Ellie" Vance is the heart and soul behind DeliceRecipe.com, dedicated to bringing deliciously easy recipes to every American home. Growing up with a rich tapestry of culinary influences from her grandmother's European traditions and her mother's American classics, Ellie developed a profound love for cooking and sharing food. After a successful career in marketing and communications, she channeled her passion and professional skills into creating DeliceRecipe. Her mission is to demystify cooking, making it an enjoyable and accessible experience for home cooks of all skill levels. Ellie meticulously develops and tests every recipe, ensuring they are not only bursting with flavor but also simple to follow using everyday ingredients. She believes that delicious meals shouldn't be complicated, and her approachable style and practical tips have made her a trusted culinary guide for countless American families.

You know, sometimes you just need a meal that feels *extra*. Like, the kind of meal that makes everyone at the table stop talking for a second, just to savor it. That’s exactly what this Seafood lasagna with shrimp and crab is all about. It’s that company-worthy, special occasion dish Ellie talks about over at DeliceRecipe—the kind that makes you feel like you’ve got it all together in the kitchen, even if you’re just whipping it up on a Tuesday for fun! Forget fussy culinary experiments; this lasagna is all about bringing people together with simple, incredible flavors and a luscious, creamy white sauce you’ll dream about. Trust me, it’s your new go-to for making any night feel like a celebration.

Why You’ll Love This Seafood Lasagna with Shrimp and Crab

Seriously, why is this recipe a keeper?

  • It’s SO company-worthy! Break out the good plates, folks, because this is a showstopper.
  • Perfect for any special occasion – birthdays, holidays, or just because you *deserve* something amazing.
  • Dreamily creamy and rich thanks to that luscious white sauce. You won’t believe how decadent it is!
  • Honestly, it’s surprisingly easy to assemble, even with the fancy seafood. No stress in this kitchen!
  • It’s the ultimate crowd-pleaser. Everyone (and I mean *everyone*) devours this cheesy baked pasta.
  • Hello, ultimate comfort food! It’s warm, cozy, and just hugs you from the inside.

Ingredients for Your Shrimp and Crab Lasagna

Okay, let’s get our hands on the good stuff for this amazing seafood lasagna! When you’re making something special, using quality ingredients really makes a difference. Here’s what you’ll need to gather. Remember to have everything prepped so we can just dive right into making that dreamy white sauce!

  • 1 pound of no-boil lasagna noodles (trust me, they make life so much easier!)
  • 1 pound of large shrimp, all peeled, deveined, and tails kicked to the curb
  • 1 pound of lovely lump crab meat, go through it carefully to make sure there are no sneaky shells hiding
  • 4 tablespoons of good quality unsalted butter
  • 4 cloves of garlic, minced up nice and fine
  • 1/2 cup of all-purpose flour (for our creamy sauce base)
  • 4 cups of whole milk, make sure it’s warmed up a bit – this helps the sauce smooth out beautifully
  • 1/2 teaspoon of nutmeg (just a pinch for that warm, cozy flavor)
  • Salt and freshly ground black pepper, to your taste
  • 1 cup of grated Parmesan cheese, divided (we’ll use some in the sauce and some on top!)
  • 1 cup of shredded mozzarella cheese (for that gooey, cheesy goodness)
  • 1/2 cup of chopped fresh parsley, also divided – it adds such a fresh pop!

Mastering the White Sauce Lasagna

Alright, let’s get this amazing Seafood lasagna with shrimp and crab put together! It’s not as hard as you think, and the result is pure magic. We’ll start by getting everything ready for that glorious white sauce, then we’ll build those layers. Grab your favorite apron!

Preparing the Creamy Béchamel for Your Seafood Lasagna

First things first, let’s tackle that dreamy béchamel sauce. Melt the butter in a big skillet over medium heat. Toss in your minced garlic and let it get fragrant for about a minute – don’t let it burn! Now, whisk in the flour and cook it for another minute or two. This makes a roux, which is the secret to a thick, luscious sauce. Slowly pour in your warmed milk, whisking constantly. Keep stirring until it thickens up nicely, coating the back of a spoon perfectly. Stir in the nutmeg, salt, pepper, and half of that Parmesan cheese. So good!

Psst! Want other creamy sauce ideas? You might love my basil pesto recipe or a decadent garlic aioli for other dishes!

Assembling the Layers of Your Shrimp and Crab Lasagna

Now for the fun part – building this beauty! Preheat your oven to 375°F (190°C) and give your 9×13 inch baking dish a little grease. Lay down the first layer of those no-boil noodles. Don’t worry if you have to break a few to fill in the gaps; we want complete coverage! Gently fold your gorgeous shrimp, crab meat, about a quarter cup of parsley, and the mozzarella into that creamy white sauce. Spread half of this seafood mixture evenly over the noodles. Then, add another layer of noodles, followed by the rest of the seafood mixture. Top it all off with one final layer of noodles!

Baking and Resting Your Oven Baked Pasta

Almost there! Sprinkle the remaining Parmesan cheese and the rest of the parsley over the very top layer of noodles. Cover that dish tightly with aluminum foil. This keeps everything from drying out. Pop it into your preheated oven for about 25 minutes. Then, take off the foil and let it bake for another 15-20 minutes. You’re looking for a beautiful golden brown top and that bubbly goodness we all love in an oven baked pasta dish. And this is a big one: let it rest for 10-15 minutes before you slice into it. I know, the wait is torture, but it helps everything set perfectly!

Tips for the Perfect Seafood Lasagna

You know, cooking is all about learning little tricks that make a big difference. When you’re making something as special as this Seafood lasagna with shrimp and crab, a few pointers can really elevate your game. We want that creamy, dreamy goodness without any fuss! And if you’re feeling adventurous with lasagna variations, you might want to check out my zucchini lasagna or my one with cottage cheese!

Ingredient Notes and Substitutions for Seafood Lasagna

For the best seafood flavor, I always go for lump crab meat – it has that lovely texture that really shines through! And fresh, good-quality shrimp make a world of difference. If you can’t find crab, you could totally use more shrimp, or even flaky white fish like cod. For a dairy-free version, you’d need to experiment with plant-based milks and cheeses, but honestly, the dairy version is where all the magic is!

Making Your Seafood Lasagna with Shrimp and Crab Ahead of Time

This is a lifesaver, honestly! You can totally assemble the whole Seafood lasagna with shrimp and crab a day before you plan to serve it. Just make sure to cover it really well with plastic wrap or foil and pop it in the fridge. When you’re ready to bake, take off the cover and add about 10-15 minutes to the covered baking time. It still turns out just as delicious!

Serving Suggestions for Your Cheesy Baked Pasta

Okay, so you’ve made this incredible cheesy baked pasta! What do you pair with such a feast? A simple, crisp green salad is always a winner to cut through the richness. Some lightly roasted parmesan green beans would be fantastic too. And of course, you can’t go wrong with some warm, crusty garlic naan bread for soaking up every last bit of that amazing white sauce. A crisp white wine, like a Sauvignon Blanc or Pinot Grigio, would be just perfect alongside it! Oh, and if you’re looking for something a little different, a side of fresh homemade guacamole can be surprisingly delicious too!

Frequently Asked Questions about Shrimp and Crab Lasagna

Got questions about this amazing Shrimp and Crab Lasagna? You’re in the right place! We want you to feel super confident making this crowd-pleaser.

Can I make this seafood lasagna with just shrimp?

Absolutely! If you’re not a fan of crab, or just can’t find it, you can totally use all shrimp. Just make sure you have about 2 pounds of shrimp total. It’ll still be delicious!

What is the best way to reheat leftover seafood lasagna?

Leftovers are the best, right? For the perfect reheat, I like to pop a portion in a small oven-safe dish, cover it with foil, and warm it up in a 350°F oven for about 15-20 minutes. You can also use the microwave, but watch it carefully so it doesn’t get rubbery!

Is this a good holiday main dish?

Oh, 100%! This seafood lasagna is totally a holiday main showstopper. It feels so special and decadent, perfect for impressing guests or just making your holiday meal extra memorable.

Nutritional Information

Now, I know some of you like to keep an eye on the details, and I get it! This seafood lasagna is definitely a rich and decadent dish, so the nutrition reflects that. Think of it as a special treat! These numbers are just estimates, of course. They can totally change depending on the exact brands you use, the fat content of your dairy, and even how much extra cheese or sauce you might sneak in (no judgment here!).

Here’s a general idea of what you’re looking at per hearty slice:

  • Serving Size: 1/8 of lasagna
  • Calories: around 550
  • Fat: about 30g
  • Saturated Fat: roughly 15g (that’s where the creamy goodness comes from!)
  • Unsaturated Fat: around 15g
  • Trans Fat: 0g
  • Cholesterol: about 150mg
  • Sodium: approximately 750mg
  • Carbohydrates: around 40g
  • Fiber: about 2g
  • Sugar: roughly 6g
  • Protein: around 30g

So, while it’s a treat, it’s packed with protein and flavor to keep you satisfied! Enjoy every delicious bite!

Share Your Seafood Lasagna Creations!

Alright, now that you’ve made this incredible Seafood lasagna with shrimp and crab, I *have* to know! Did you love it? Did it wow your guests? Please, spill the beans in the comments below! I absolutely adore seeing your photos and hearing about your kitchen successes. Feel free to share them on social media and tag us, or send us a message through our contact page. Happy cooking!

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Shrimp and Crab Lasagna with Creamy White Sauce

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A company-worthy seafood lasagna layered with shrimp, crab, and a rich white sauce, perfect for special occasions.

  • Author: ellievance
  • Prep Time: 25 min
  • Cook Time: 40 min
  • Total Time: 65 min
  • Yield: 8 servings 1x
  • Category: Main Course
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 1 pound no-boil lasagna noodles
  • 1 pound large shrimp, peeled, deveined, and tails removed
  • 1 pound lump crab meat, picked over for shells
  • 4 tablespoons unsalted butter
  • 4 cloves garlic, minced
  • 1/2 cup all-purpose flour
  • 4 cups whole milk, warmed
  • 1/2 teaspoon nutmeg
  • Salt and freshly ground black pepper to taste
  • 1 cup grated Parmesan cheese, divided
  • 1 cup shredded mozzarella cheese
  • 1/2 cup chopped fresh parsley, divided

Instructions

  1. Preheat your oven to 375°F (190°C). Lightly grease a 9×13 inch baking dish.
  2. Arrange a single layer of no-boil lasagna noodles in the bottom of the prepared baking dish. You may need to break some noodles to fit.
  3. In a large skillet, melt the butter over medium heat. Add the minced garlic and cook until fragrant, about 1 minute.
  4. Whisk in the flour and cook for 1-2 minutes, stirring constantly, to create a roux.
  5. Gradually whisk in the warmed milk until smooth. Bring the sauce to a simmer, stirring constantly, until it thickens enough to coat the back of a spoon. This is your béchamel sauce.
  6. Stir in the nutmeg, salt, pepper, and 1/2 cup of the Parmesan cheese. Remove from heat.
  7. Gently fold in the shrimp, crab meat, 1/4 cup of parsley, and the mozzarella cheese into the béchamel sauce.
  8. Spread half of the seafood mixture evenly over the lasagna noodles in the baking dish.
  9. Top with another layer of no-boil lasagna noodles.
  10. Spread the remaining seafood mixture over the second layer of noodles.
  11. Top with a final layer of no-boil lasagna noodles.
  12. Sprinkle the remaining 1/2 cup Parmesan cheese and the remaining 1/4 cup parsley over the top layer of noodles.
  13. Cover the baking dish tightly with aluminum foil.
  14. Bake for 25 minutes.
  15. Remove the foil and bake for an additional 15-20 minutes, or until the top is golden brown and bubbly.
  16. Let the lasagna rest for 10-15 minutes before slicing and serving.

Notes

  • For an even richer sauce, you can use half-and-half instead of whole milk.
  • If you prefer, you can add a pinch of cayenne pepper to the white sauce for a little heat.
  • This lasagna can be assembled up to a day in advance. Cover and refrigerate, then add about 10-15 minutes to the covered baking time.
  • Consider this a great option for meal planning, especially if you are looking for a make-ahead lasagna for entertaining.

Nutrition

  • Serving Size: 1/8 of lasagna
  • Calories: 550
  • Sugar: 6g
  • Sodium: 750mg
  • Fat: 30g
  • Saturated Fat: 15g
  • Unsaturated Fat: 15g
  • Trans Fat: 0g
  • Carbohydrates: 40g
  • Fiber: 2g
  • Protein: 30g
  • Cholesterol: 150mg

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