As I stirred together the creamy mixture for my Crab and Shrimp Casserole, the enticing scents of garlic and lemon filled the air, instantly transporting me to the comforting kitchens of my childhood. This dish is a warm embrace on a chilly evening, blending succulent crab and tender shrimp with a golden breadcrumb topping that crisps to perfection. Not only is it a breeze to prepare, but it also caters to any seafood lover’s cravings while being make-ahead friendly, making it perfect for busy weeknights or special gatherings. Imagine gathering around the dinner table, everyone eager to dive into this cozy seafood delight. Ready to whip up a dish that will make your taste buds sing and create delightful memories? Let’s get cooking!

Why Should You Try This Casserole?
Comforting, Yet Indulgent: This Crab and Shrimp Casserole balances rich flavors with a cozy dish, perfect for any occasion!
Make-Ahead Magic: Prep it in advance and enjoy a stress-free dinner, giving you more time to connect with loved ones.
Endless Variations: Experiment with different seafood or even swap rice for pasta, tailoring it to your preferences!
Crowd-Pleasing Delight: Whether it’s a casual family dinner or a festive gathering, this dish is sure to impress. For similar tasty ideas, check out our Coconut Shrimp with Sweet Chili Mayo or Honey Garlic Shrimp recipes!
Easy Cleanup: One dish means less time cleaning up and more time enjoying your meal!
Crab and Shrimp Casserole Ingredients
For the Seafood Filling
- Lump Crab Meat – The star seafood of this dish, providing rich flavor; fresh or canned can be used.
- Shrimp – Adds a sweet and tender texture; use peeled and deveined pre-cooked shrimp for convenience.
For the Base
- Cooked Rice – Acts as the filling foundation; any type of cooked rice can be used.
- Shredded Cheddar Cheese – Provides creaminess and flavor; Monterey Jack can substitute for a milder taste.
- Mayonnaise – Adds richness and moisture; full-fat mayonnaise enhances creaminess.
- Sour Cream – Contributes to a creamy texture and tang.
For the Flavor Boost
- Onion – Finely chopped for depth of flavor; complements the seafood.
- Garlic – Freshly minced for improved flavor intensity.
- Green Bell Pepper – Adds crunch and a slight bitterness; can be substituted with other peppers based on preference.
- Red Bell Pepper – Provides sweetness and color; enhances the visual appeal of the dish.
- Worcestershire Sauce – Adds umami and depth; essential for flavor balance.
- Lemon Juice – Brightens the entire dish; fresh lemon juice is preferred.
- Old Bay Seasoning – A classic seafood seasoning that enhances flavor complexity.
- Salt and Pepper – Enhances overall taste; adjust to preference.
For the Crunchy Topping
- Breadcrumbs – Create a crispy topping; essential for textural contrast.
- Butter – Used to combine with breadcrumbs for added flavor; unsalted helps control saltiness.
- Fresh Parsley – A final garnish that adds color and freshness.
This cozy Crab and Shrimp Casserole is the perfect delight for seafood lovers, making it easy to bring everyone together for a memorable dinner!
Step‑by‑Step Instructions for Crab and Shrimp Casserole
Step 1: Preparation
Begin by preheating your oven to 350°F (175°C). While the oven heats up, greasing a 9×13-inch baking dish with a thin layer of butter or cooking spray will ensure that your Crab and Shrimp Casserole releases easily after baking. This preparation sets the stage for a delicious and smooth cooking experience.
Step 2: Combine Seafood
In a large mixing bowl, gently fold together the lump crab meat and pre-cooked shrimp. Carefully add the cooked rice and shredded cheddar cheese, ensuring you preserve the integrity of the crab meat, which is the star of this delightful casserole. This mixture forms the heart of your cozy seafood dish and should look vibrant and inviting.
Step 3: Add Creaminess
Now it’s time to make your filling creamy and flavorful. Incorporate mayonnaise, sour cream, chopped onion, minced garlic, green bell pepper, and red bell pepper into the seafood mixture. Add Worcestershire sauce, fresh lemon juice, Old Bay seasoning, salt, and pepper as you combine everything. Stir gently until all ingredients are well mixed, but be cautious not to break up the crab meat.
Step 4: Assemble Casserole
Transfer your delicious mixture to the prepared baking dish, spreading it evenly while avoiding any compacting. Make sure the surface is level to ensure even cooking for your Crab and Shrimp Casserole. This step is crucial as it helps the casserole bake uniformly, leading to a perfect texture throughout.
Step 5: Prepare Topping
In a small bowl, mix breadcrumbs with melted butter until they are evenly coated. The buttery breadcrumbs will provide a delightful crunch on top of your casserole. Sprinkle this mixture generously over the assembled seafood filling, making sure to cover all areas for that crispy finish which is a highlight of this dish.
Step 6: Bake
Place the casserole in the preheated oven and bake for 25-30 minutes. Keep an eye on it, and when the topping turns golden brown and the filling bubbles at the edges, it’s time to take your Crab and Shrimp Casserole out of the oven. The aroma will fill your kitchen, enticing everyone to gather around the dinner table.
Step 7: Rest and Serve
After removing the casserole from the oven, allow it to rest for a few minutes. This will help the filling set slightly, making serving easier. Just before serving, garnish with freshly chopped parsley to add color and freshness. Now, scoop out portions and enjoy this comforting seafood delight with your loved ones.

How to Store and Freeze Crab and Shrimp Casserole
Fridge: Store any leftover Crab and Shrimp Casserole in an airtight container for up to 3 days. Reheat in the oven at 350°F (175°C) until warmed through.
Freezer: If you want to freeze the casserole, cover it tightly with plastic wrap and aluminum foil. It can be frozen for up to 2 months for the best quality.
Thawing: When ready to enjoy, thaw in the fridge overnight before baking. Bake at 350°F (175°C) for 30-35 minutes, or until heated thoroughly.
Make-Ahead: Prepare the casserole up to 24 hours in advance, store it in the fridge, and simply bake it when you’re ready to serve.
What to Serve with Crab and Shrimp Casserole
Imagine a delightful dinner spread that warms the heart and soul, perfectly complementing your cozy Crab and Shrimp Casserole.
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Crisp Green Salad: A refreshing mix of greens topped with a tangy vinaigrette balances the richness of the casserole, adding a burst of freshness.
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Garlic Breadsticks: Soft, buttery sticks brushed with garlic butter create a satisfying texture contrast and are perfect for soaking up any leftovers.
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Steamed Asparagus: Tender asparagus spears tossed with lemon zest provide a bright, crunchy element that enhances the seafood flavors beautifully.
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Coleslaw: A creamy, tangy coleslaw adds crunch and a fresh element to the meal, balancing the casserole’s warmth with a delightful crispness.
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White Wine: Pair with a chilled glass of Sauvignon Blanc, whose citrus notes elevate the seafood flavors and add a touch of sophistication.
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Dessert: Lemon Tart: A light and zesty lemon tart makes a sweet ending to your seafood feast, echoing the fresh lemon in the casserole while cleansing the palate.
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Roasted Corn on the Cob: Sweet, buttery corn offers a summertime vibe, bringing a sweet crunch that pairs delightfully with the creamy casserole.
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Macaroni and Cheese: For a delightful twist, serve alongside a side of rich macaroni and cheese to indulge in a comforting blend of flavors and textures.
Crab and Shrimp Casserole Variations
Feel free to explore these delightful variations to put your own spin on this cozy dish!
- Imitation Crab: Swap lump crab meat with imitation crab for a more affordable option that still has great flavor.
- Cheese Swap: Use Swiss or Gouda cheese instead of cheddar for a unique twist; these options will add creamy depth.
- Pasta Perk: Replace the cooked rice with small pasta shapes for a new texture that will surprise and delight your family.
- Veggie Boost: Add fresh spinach or sautéed mushrooms for a nutritious boost—this will enhance both flavor and color.
- Spicy Kick: Incorporate a diced jalapeño or sprinkle of red pepper flakes for added heat if your crew enjoys a spicy touch!
- Mixed Seafood: Combine shrimp with scallops or even lobster for a luxurious mix that feels extra special on any occasion.
- Herb Infusion: Try adding fresh dill or thyme for a fragrant herbaceous layer that beautifully complements the seafood.
- Casserole Prep: For an even easier weeknight dinner, mix and assemble the casserole in advance and keep it in the fridge until you’re ready to bake.
Dive into the customization! If you’re looking for inspiration for another seafood dish, check out our Bang Bang Shrimp Tacos or the creamy goodness of Garlic Shrimp Over Mashed Potatoes. Enjoy experimenting!
Expert Tips for Crab and Shrimp Casserole
- Use Pre-Cooked Shrimp: Opting for pre-cooked shrimp saves time in your kitchen, allowing you to focus on flavor without added prep time.
- Avoid Over-Mixing: Gentle folding is key; over-mixing can break up the delicate crab meat, resulting in a less appealing texture in your casserole.
- Check the Consistency: If the mixture appears too wet, incorporate more cooked rice or cheese to achieve a firmer, more satisfying texture in your Crab and Shrimp Casserole.
- Golden Brown Finish: Look for a golden brown topping and bubbling filling to ensure perfect doneness; this is crucial for both flavor and presentation.
- Add Your Twist: Enhance flavor by adding a teaspoon of Dijon mustard or a sprinkle of smoked paprika; these small adjustments can elevate your casserole experience!
- Garnish Thoughtfully: Fresh parsley isn’t just for aesthetics; it adds a touch of brightness and freshness that complements the rich flavors beautifully.
Make Ahead Options
These Crab and Shrimp Casserole is perfect for meal prep enthusiasts! You can assemble the entire casserole up to 24 hours in advance, simply cover it with plastic wrap and refrigerate to keep it fresh. For the best results and to prevent the breadcrumbs from getting soggy, avoid adding the topping until you’re ready to bake. When you’re ready to serve, just sprinkle the buttered breadcrumbs over the top and bake the casserole directly from the refrigerator. This way, you’ll still enjoy that delightful crispy topping and creamy filling, allowing you to savor your family dinner without the last-minute rush!

Crab and Shrimp Casserole Recipe FAQs
What kind of crab meat should I use for this casserole?
You can use either fresh or canned lump crab meat, depending on your preference and availability. Fresh crab meat imparts a delightful sweetness but canned offers convenience and a longer shelf life. Just make sure to check that it is from a reputable source for the best flavor.
How should I store leftovers of the Crab and Shrimp Casserole?
Store any leftover Crab and Shrimp Casserole in an airtight container in the refrigerator for up to 3 days. When you’re ready to enjoy it again, simply reheat in the oven at 350°F (175°C) for about 15-20 minutes until it’s warmed through.
Can I freeze the Crab and Shrimp Casserole?
Absolutely! To freeze your casserole, cover it tightly with plastic wrap and then with aluminum foil to prevent freezer burn. It can be frozen for up to 2 months. To enjoy it later, thaw in the fridge overnight and bake at 350°F (175°C) for 30-35 minutes until heated thoroughly.
What can I do if my casserole mixture feels too watery?
If you find that your mixture seems too wet, try adding a little more cooked rice or shredded cheese to absorb excess moisture and achieve a firmer texture. Alternatively, baking it a bit longer can help it set up nicely, but keep an eye on that golden topping!
Is this dish safe for people with shellfish allergies?
Due to the presence of crab and shrimp, this casserole is not suitable for anyone with shellfish allergies. If you’re looking for similar comfort food, consider trying a chicken or vegetable casserole instead, which can still provide that homey warmth without allergenic ingredients.
Can I make this casserole ahead of time?
Yes, you can prepare the entire Crab and Shrimp Casserole up to 24 hours in advance. Assemble it as instructed, cover it well, and store it in the refrigerator. When you’re ready to serve, just pop it in the oven for baking—this can even enhance the flavor as the ingredients have time to meld!

Crab and Shrimp Casserole: Comforting Seafood Bliss at Home
Ingredients
Equipment
Method
- Begin by preheating your oven to 350°F (175°C) and greasing a 9x13-inch baking dish.
- In a large mixing bowl, gently fold together the lump crab meat and pre-cooked shrimp. Add the cooked rice and shredded cheddar cheese.
- Incorporate mayonnaise, sour cream, chopped onion, minced garlic, green bell pepper, red bell pepper, Worcestershire sauce, fresh lemon juice, Old Bay seasoning, salt, and pepper into the seafood mixture.
- Transfer the mixture to the prepared baking dish, spreading evenly without compacting.
- Mix breadcrumbs with melted butter until evenly coated and sprinkle over the seafood filling.
- Bake in the preheated oven for 25-30 minutes until topping is golden brown and filling bubbles at the edges.
- Allow to rest for a few minutes, garnish with parsley, and serve.

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