As I flipped through my old recipe notebook, my eyes landed on a gem that always brings back memories of family gatherings – Decadent Seafood Lasagna with Shrimp and Crab. This dish has a way of turning a simple dinner into a luxurious feast, with layers of tender shrimp and delicate crab enveloped in rich Alfredo sauce. Not only is it surprisingly easy to prepare, but it also doubles as a make-ahead option—a perfect solution for busy weeknights or festive celebrations. The golden breadcrumb topping adds just the right amount of crunch, making every bite feel like a special occasion. Ready to bring some seaside elegance to your dinner table? Let’s dive into the details of how to create this unforgettable seafood delight that’s sure to wow your loved ones!

Why is Seafood Lasagna a Must-Try?
Indulgence at its finest: Every bite of this Decadent Seafood Lasagna with Shrimp and Crab is a luxurious experience, featuring creamy textures and robust flavors. Customization options abound: Feel free to switch up the seafood or cheese for a personalized touch. Easy preparation: With straightforward steps, this dish is perfect for both novice cooks and seasoned chefs. Crowd-pleaser alert: It’s a guaranteed hit at gatherings—just pair it with warm garlic bread or a zesty green salad for a full meal. Make-ahead convenience makes it ideal for busy schedules: Simply assemble it in advance, and you’re ready to impress when the time comes!
Seafood Lasagna Ingredients
For the Lasagna
• Lasagna Sheets – Forms the base; for convenience, you can use no-boil varieties.
• Shrimp (1 pound) – Adds a sweet, briny flavor; ensure it’s fresh or properly thawed and well-drained.
• Crab (8 ounces) – Provides a delicate taste; substitute with imitation crab for a budget-friendly option.
For the Cheese Mixture
• Ricotta Cheese (15 ounces) – Adds creaminess; cottage cheese can be used for a lower-fat alternative.
• Mozzarella Cheese (2 cups) – Ensures a gooey texture, enhancing the dish’s creaminess.
For the Sauce and Flavoring
• Alfredo Sauce (2 cups) – Provides a rich, velvety texture; feel free to use homemade or store-bought options for ease.
• Garlic (3 cloves) – Infuses the dish with robust flavor; fresh cloves yield the best taste.
• Parsley (1 cup) – Brightens flavors with fresh herbs and enhances visual appeal.
For the Crunchy Topping
• Breadcrumbs (1 cup) – Adds a delightful crunch; panko breadcrumbs offer a better texture, or crushed crackers work as a substitute.
Step‑by‑Step Instructions for Decadent Seafood Lasagna with Shrimp and Crab
Step 1: Prep Ingredients
Begin by draining and cooling your shrimp and crab to remove excess moisture, ensuring a perfect seafood lasagna. If you opted for traditional lasagna sheets, cook them in boiling water until al dente, about 8-10 minutes. While that’s happening, preheat your oven to 375°F (190°C) to prepare for baking this delightful dish.
Step 2: Make Cheese Filling
In a mixing bowl, combine 15 ounces of ricotta cheese, 2 cups of shredded mozzarella, minced garlic (3 cloves), and freshly chopped parsley (1 cup). Stir until the mixture is homogenous and creamy, which will create a luscious filling for your seafood lasagna. This step infuses the dish with vibrant flavors and prepares your filling for layering.
Step 3: Layer the Lasagna
In a greased baking dish, pour a thin layer of Alfredo sauce (about half a cup) to prevent sticking. Place your first layer of cooked lasagna sheets over the sauce, followed by half of your seafood mix and half of the cheese filling. Repeat this layering process, finishing with another layer of noodles on top to create a hearty seafood lasagna with shrimp and crab.
Step 4: Top and Bake
Pour the remaining Alfredo sauce evenly over the top layer of noodles, ensuring every bit is deliciously coated. Sprinkle breadcrumbs (1 cup) generously on top for added crunch. Slide the baking dish into the preheated oven and bake for approximately 40 minutes, or until the top is golden and bubbly, allowing the flavors to meld beautifully.
Step 5: Rest and Serve
Once baked to perfection, remove the seafood lasagna from the oven and let it rest for 10-15 minutes. This resting period allows the layers to set, making it easier to slice and serve. When you finally cut into your Decadent Seafood Lasagna with Shrimp and Crab, you’ll reveal perfectly defined layers, ready to impress your family and friends.

What to Serve with Decadent Seafood Lasagna with Shrimp and Crab
Elevate your dining experience by pairing this sensational seafood delight with complementary sides that add freshness and flavor.
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Garlic Bread: The warm, buttery richness of garlic bread is the perfect accompaniment, balancing the creamy lasagna with its crunchy texture.
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Zesty Lemon Green Salad: A refreshing salad with peppery arugula and a zesty lemon vinaigrette brightens the meal and cuts through the richness of the lasagna. Pairing a citrusy flavor enhances the seafood and adds a vibrant touch.
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Steamed Asparagus: Tender, speckled asparagus lightly seasoned with olive oil and salt adds a crisp and earthy contrast, perfectly balancing the lasagna’s comfort food essence.
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Herbed Quinoa: Opt for a light grain like quinoa, tossed with fresh herbs and lemon zest. Its nutty flavor and fluffy texture play harmoniously with the seafood lasagna, creating a well-rounded plate.
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Roasted Vegetables: A medley of roasted seasonal vegetables, like zucchini, bell peppers, and cherry tomatoes, brings a sweet and caramelized note that complements the rich seafood layers.
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Chardonnay: A glass of chilled Chardonnay, with its light oak and crisp acidity, enhances the flavors of the seafood while providing a delightful contrast to the creamy sauce.
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Tiramisu: Conclude your meal with a classic Italian dessert. The rich, coffee-infused layers of tiramisu provide a delightful contrast to the seafood lasagna, leaving everyone with a sweet finale.
Seafood Lasagna Variations & Substitutions
Feel free to get creative with this Seafood Lasagna; the delicious possibilities are endless!
- Seafood Swap: Replace crab with scallops for a different seafood flavor profile that still delivers luxury.
- Cheese Blend: Experiment with adding sharp cheddar or creamy Fontina for a unique twist on flavors. Each cheese brings its own character to the dish!
- Vegetarian Option: Swap the seafood entirely with sautéed mushrooms or spinach, giving this lasagna a hearty and satisfying plant-based twist.
- Spicy Kick: Add red pepper flakes or diced jalapeños for a touch of heat, bringing an exciting flavor boost without overpowering the dish.
- Herb Infusion: Try mixing in fresh basil or dill alongside the parsley for an aromatic lift that complements the seafood beautifully.
- Whole Wheat Lasagna: Use whole wheat lasagna sheets for a healthier option; it’s a great way to add more fiber while keeping the dish satisfying.
- Alfredo Variations: Make a homemade Alfredo sauce using garlic, butter, and cream for a richer taste than store-bought.
- Texture Tweak: Incorporate chopped spinach or artichoke hearts into the seafood mixture for added texture and flavor.
If you’re also looking to explore more seafood delights, check out these wonderful dishes like Savory Shrimp Crab or a light and refreshing Avocado Salsa Shrimp side for a perfectly balanced meal!
Storage Tips for Seafood Lasagna with Shrimp and Crab
- Fridge: Store any leftover seafood lasagna in an airtight container for up to 3 days, ensuring it retains its delicious flavors and creamy texture.
- Freezer: If you’d like to make this seafood lasagna ahead of time, freeze unbaked portions tightly wrapped for up to 3 months. Thaw overnight in the fridge before baking for best results.
- Reheating: To reheat, cover the lasagna with foil and bake at 350°F (175°C) for about 25-30 minutes, or until heated through. This helps maintain the lasagna’s moisture and flavor.
- Serving Tips: For an inviting presentation, let the seafood lasagna sit for 10-15 minutes after reheating to set the layers before slicing and serving.
Expert Tips for Seafood Lasagna
- Cool Seafood First: Allow the shrimp and crab to cool completely before assembly to avoid excess moisture ruining your seafood lasagna.
- Even Layering: Prioritize even distribution of shrimp, crab, and cheese to ensure consistent flavor and texture throughout each slice.
- Make-Ahead Option: Assemble your seafood lasagna ahead of time and refrigerate overnight. This allows flavors to meld beautifully and saves time on busy days.
- Rest Before Slicing: Do not skip the resting period after baking; letting it sit for 10-15 minutes helps the layers set, ensuring neat slices for serving.
- Try Variations: Don’t hesitate to experiment with different seafood or cheese blends to create a personal twist on this seafood lasagna with shrimp and crab.
Make Ahead Options
These Decadent Seafood Lasagna with Shrimp and Crab are ideal for busy home cooks looking to simplify mealtime! You can assemble the lasagna up to 24 hours in advance; simply layer the ingredients as instructed and cover tightly with plastic wrap or foil. Refrigerate to keep everything fresh and flavorful. If you want to prepare further ahead, you can freeze the unbaked lasagna for up to 3 months—just be sure to allow it to fully thaw in the refrigerator overnight before baking. When ready to serve, bake directly from the fridge at 375°F (190°C) for approximately 40 minutes, or until golden and bubbly for delicious results just like fresh. With these make-ahead tips, you’ll save precious time on busy weeknights while still serving a luxurious dish everyone will love!

Decadent Seafood Lasagna with Shrimp and Crab Recipe FAQs
How should I select the shrimp for my lasagna?
Absolutely! When choosing shrimp, look for fresh or well-thawed shrimp that are firm to the touch and have a mild ocean scent. Avoid any shrimp with dark spots or a strong fishy smell, as these are signs of spoilage. For this recipe, you’ll need about 1 pound, which can be easily added to the layers.
What’s the best way to store leftover seafood lasagna?
Very good question! To keep your seafood lasagna fresh, store any leftovers in an airtight container in the fridge for up to 3 days. This helps maintain its rich flavors and creamy texture. If you want to enjoy it later, you can freeze unbaked portions tightly wrapped in plastic wrap and aluminum foil for up to 3 months.
Can I freeze seafood lasagna, and if so, how?
Absolutely! Freezing seafood lasagna is a great option for meal prep. If you want to freeze it unbaked, assemble it in a freezer-safe dish and cover it tightly. When you’re ready to bake, thaw it overnight in the fridge and bake as directed. For baked lasagna, let it cool completely before wrapping tightly and freezing. To reheat, cover with foil and bake at 350°F (175°C) for about 25-30 minutes.
What are some common issues when making seafood lasagna?
The most common issue is excess moisture from the seafood. To prevent this, make sure to cool your shrimp and crab before layering. Another tip is to evenly distribute all ingredients during layering; this ensures each slice has a balanced flavor and texture. Follow this step and you’ll avoid them!
Are there any dietary considerations I should keep in mind?
Very much so! If anyone at your gathering has seafood allergies, it’s best to avoid this recipe altogether or consider substituting the seafood with sautéed vegetables for a vegetarian version. You can also adjust the cheeses to meet dietary needs—using lower-fat cheese options like cottage cheese can be a great alternative for those looking to reduce fat intake.
Can I customize the seafood in the lasagna?
Without a doubt! This seafood lasagna is incredibly versatile. Feel free to substitute the shrimp and crab with other seafood such as scallops or even a mix of your favorites. If you want a vegetarian twist, sautéed mushrooms or spinach work beautifully in place of the seafood. The more the merrier when it comes to making it your own!

Indulge in Seafood Lasagna with Shrimp and Crab Delight
Ingredients
Equipment
Method
- Begin by draining and cooling your shrimp and crab to remove excess moisture. Cook traditional lasagna sheets if used, preheat the oven to 375°F (190°C).
- In a mixing bowl, combine ricotta cheese, mozzarella, minced garlic, and chopped parsley. Stir until creamy.
- In a greased baking dish, pour a thin layer of Alfredo sauce, then layer cooked lasagna sheets, half of the seafood mix, and half of the cheese filling. Repeat and finish with a layer of noodles.
- Pour remaining Alfredo sauce over the top noodles and sprinkle breadcrumbs. Bake for approximately 40 minutes until golden and bubbly.
- Remove from oven and let it rest for 10-15 minutes before slicing and serving.

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