Shrimp and Crab Casserole Recipe That’s Rich and Creamy

A rich shrimp and crab casserole brings the flavors of the coast right to the comfort of a warm, bubbling dish that feels like a celebration on a weeknight.

There's something special about seafood baked until golden and satisfying, the kind of meal that makes any occasion feel a bit fancier without requiring hours in the kitchen.

Friends gather around tables for dishes like these because they deliver impressive taste with surprisingly little fuss.

The creamy, savory goodness appeals to anyone who loves the ocean's best offerings in one cozy, crowd-pleasing pan.

You can serve it at casual get-togethers or save it for those moments when you want to treat the people you care about to something memorable.

Each spoonful feels indulgent yet approachable, proving that restaurant-worthy meals happen right in home kitchens too.

Busy schedules don't stand a chance against a dish that combines ease with pure deliciousness.

Scroll down and see how simple creating something this satisfying can be.

Best Reasons to Try Shrimp and Crab Casserole

• Comfort Food Classic: This seafood casserole brings warmth and satisfaction like a big hug from grandma’s kitchen, perfect for gathering friends and family around the dinner table.
• Super Simple Prep: No complex techniques needed – just mix, stir, and bake. Even beginner cooks can create a delicious meal that looks impressive and tastes amazing.
• Protein-Packed Meal: Loaded with shrimp and crab, this dish delivers a serious protein punch that keeps everyone feeling full and energized without tons of complicated ingredients.
• Crowd-Pleasing Flavor: The creamy sauce, tender seafood, and crispy breadcrumb topping create a crowd-pleasing combination that works for casual dinners or special occasions.

What Shapes The Seafood Richness In This Casserole

• 1 Cup Cooked Shrimp, Chopped: Tender seafood that brings oceanic flavor to your casserole. Pick small or chopped pieces for consistent texture.
• 1 Cup Crab Meat or Imitated Crab: Delicate protein that melts perfectly into the creamy mixture. Flaked texture ensures even distribution.

• 1 Cup Mayonnaise: Silky base that creates rich, smooth consistency for your casserole.
• ½ Cup Sour Cream: Tangy component that adds depth and creamy texture.
• ½ Cup Cream Cheese, Softened: Luxurious ingredient that helps bind and thicken the mixture.
• ½ Cup Shredded Mozzarella or Monterey Jack: Melty cheese that provides stretchy, gooey goodness.
• Optional: ¼ Cup Grated Parmesan Cheese: Sharp, salty topping that enhances overall flavor.

• 1 Small Onion, Finely Diced, 1 Clove Garlic, Minced: Foundational flavor builders that create a savory base.
• 1 Tablespoon Butter, 1 Teaspoon Lemon Juice, ½ Teaspoon Soy Sauce: Complementary flavors that brighten and balance the dish.
• ¼ Teaspoon Black Pepper, ¼ Teaspoon Paprika: Warming spices that add subtle complexity.
• ½ Cup Seasoned Breadcrumbs or Crushed Crackers, 1 Tablespoon Melted Butter: Crispy topping that provides delightful crunch.

Setups That Help Layer, Mix, And Bake Seafood Easily

• Large Mixing Bowl: My trusty big bowl is perfect for combining all the seafood and creamy ingredients smoothly.
• Skillet: Essential for sautéing those delicious aromatics like onions and garlic to build incredible flavor.
• Spatula: Helps me mix everything evenly and spreads the casserole mixture into the baking dish perfectly.
• Baking Dish: A standard 9×13 inch dish works great for creating this creamy seafood casserole.
• Measuring Cups and Spoons: Critical for getting the right balance of ingredients and ensuring consistent flavor.
• Chef’s Knife: Needed for chopping onions and garlic into fine, even pieces.
• Cutting Board: Provides a clean surface for prepping ingredients without damaging countertops.

How to Cook Shrimp and Crab Casserole

Small Enhancers For Heat, Herbs, Or Texture

• Let seafood and dairy sit out for 15-20 minutes before mixing. This helps everything blend smoothly and prevents cold spots in the casserole.
• Choose fresh, high-quality shrimp and crab. Frozen works fine, but thaw completely and pat dry to prevent excess moisture.
• Experiment with different cheese types like gruyere or sharp cheddar to add unique flavor profiles. Avoid low-fat versions which can separate during baking.
• Toast breadcrumbs in a skillet before adding to the topping for extra golden, crispy texture. Panko breadcrumbs work best for maximum crispiness.
• Assemble the casserole earlier in the day, cover, and refrigerate. When ready to serve, remove from fridge 30 minutes before baking to ensure even heating.

Seafood Variations To Match Any Mood

• Seafood-Free Comfort Casserole: Swap shrimp and crab with diced chicken or turkey for a hearty land-based version that still delivers creamy, satisfying flavors.
• Gluten-Free Seafood Bake: Replace traditional breadcrumbs with crushed gluten-free crackers or almond flour to make the dish celiac-friendly without losing that crispy topping texture.
• Dairy-Light Ocean Casserole: Substitute cream cheese and sour cream with Greek yogurt and coconut cream for a lighter, tangier dish that keeps the rich seafood essence.
• Low-Carb Marine Delight: Skip breadcrumb topping and use crushed pork rinds or almond flour instead, reducing carbohydrates while maintaining a delicious crunchy layer.

Perfect Tables For This Warm, Bubbly Casserole

• Serve Perfectly with Side Dishes: Pair this seafood casserole with steamed white rice or roasted asparagus for a complete meal that balances the rich, creamy texture.
• Enhance Seafood Flavors: Sprinkle fresh chopped parsley or chives over the top just before serving to add a bright, fresh note that complements the rich seafood base.
• Wine Pairing Recommendation: Choose a crisp white wine like Sauvignon Blanc or Pinot Grigio, which cuts through the casserole’s creaminess and enhances the delicate seafood flavors.
• Garnish for Presentation: Top the casserole with a few whole shrimp or crab legs around the edges to make the dish look more elegant and highlight the star ingredients.

Keeping Casserole Creamy After Cooling

• Keep seafood casserole chilled for 2 – 3 days. Its creamy consistency holds well when stored properly.
• Warm at 325°F for 15 – 20 minutes, covering with foil to protect moisture and prevent overcooking seafood.
• Heat in 30-second spurts, stirring each time. Add cream or milk to refresh the sauce.
• Freeze portions for up to 1 month. Thaw overnight before reheating for the smoothest texture.

Shrimp–Crab Casserole Notes For Seafood Fans

Rich Shrimp and Crab Casserole Recipe

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4.7 from 36 reviews

• Total Time: 35-40 minutes
• Yield: 4 1x

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Description

Shrimp and Crab Casserole turns my family dinner into a seafood celebration that feels like a coastal getaway right at home. Fresh Gulf Coast flavors blend perfectly with creamy sauce and crisp breadcrumb topping for a delightful meal that brings everyone to the table with smiles.

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Ingredients

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Seafood:

• 1 cup cooked shrimp, chopped
• 1 cup crab meat or imitated crab

Dairy and Creamy Ingredients:

• 1 cup mayonnaise
• ½ cup sour cream
• ½ cup cream cheese, softened
• ½ cup shredded mozzarella or monterey jack
• 1 tablespoon butter
• Optional: ¼ cup grated parmesan cheese

Seasonings and Other Ingredients:

• 1 small onion, finely diced
• 1 clove garlic, minced
• 1 teaspoon lemon juice
• ½ teaspoon soy sauce
• ¼ teaspoon black pepper
• ¼ teaspoon paprika
• ½ cup seasoned breadcrumbs or crushed crackers
• 1 tablespoon melted butter

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Instructions

1. Heat the oven to precisely 375°F (190°C). Thoroughly coat a 9×13-inch baking dish with cooking spray or butter.
2. Melt 1 tablespoon butter in a skillet over medium heat. Sauté 1 small finely diced onion until translucent, approximately 5 minutes. Add 1 minced garlic clove and cook for 30 seconds. Remove from heat.
3. Combine 1 cup chopped shrimp and 1 cup flaked crab meat in a large mixing bowl.
4. Add 1 cup mayonnaise, ½ cup sour cream, ½ cup softened cream cheese, and ½ cup shredded mozzarella to the seafood. Stir until completely integrated.
5. Season the mixture with 1 teaspoon lemon juice, ½ teaspoon soy sauce, ¼ teaspoon black pepper, and ¼ teaspoon paprika. Mix thoroughly.
6. Incorporate the sautéed onions and garlic into the seafood blend. Ensure even distribution.
7. Transfer the entire mixture to the prepared baking dish. Smooth the surface with a spatula.
8. Create the topping by combining ½ cup seasoned breadcrumbs with 1 tablespoon melted butter. Optional: Sprinkle ¼ cup grated Parmesan cheese on top.
9. Spread the breadcrumb mixture evenly across the casserole surface.
10. Bake uncovered for exactly 25-30 minutes until the top turns golden brown and edges become bubbly.

Notes

• Fresh seafood makes all the difference, so select high-quality shrimp and crab meat for maximum flavor.
• When using artificial crab, chop it into small, uniform pieces to ensure even distribution and consistent texture.
• Drain excess moisture from seafood before mixing to prevent a watery casserole that won’t set properly.
• For a gluten-free version, swap regular breadcrumbs with gluten-free panko or crushed gluten-free crackers.

• Prep Time: 10 minutes
• Cook Time: 25-30 minutes
• Category: Casseroles
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 4
• Calories: 355 kcal
• Sugar: 2 g
• Sodium: 520 mg
• Fat: 29 g
• Saturated Fat: 11 g
• Unsaturated Fat: 16 g
• Trans Fat: 0.5 g
• Carbohydrates: 14 g
• Fiber: 1.5 g
• Protein: 20 g
• Cholesterol: 110 mg