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Chinese Buffet

Crab and Shrimp Casserole

Shrimp and Crab Casserole

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Savor our Cheesy Crab and Shrimp Casserole, a homemade delight that, in my view, outshines buffets. Imagine a blend of imitation crab, small shrimp, and sautéed onions in a creamy mix. Cheddar and mozzarella, spiced just right, create a delicious masterpiece. Drizzled with butter and a touch of parsley, this homemade dish surpasses buffets with comfort and flavor. Elevate your dining with our Cheesy Crab and Shrimp Casserole
because sometimes, homemade is just better.


  • 1 lb imitation crabmeat (or real, if preferred)

  • 1/2 lb extra-small shrimp

  • 1/2 large onion, thinly sliced and separated into rings

  • 3 tablespoons butter (2 tablespoons for sautéing onions, 1 tablespoon for drizzling)

  • 1/3 cup mayonnaise

  • 1/3 cup sour cream

  • 4 ounces cream cheese (1/2 a block)

  • 2 cups shredded cheddar cheese (1 cup for the mixture, 1 cup for the top)

  • 2 cups shredded mozzarella (1 cup for the mixture, 1 cup for the top)

  • 2 teaspoons garlic powder

  • 1 teaspoon dried parsley (or a handful of fresh, chopped, plus additional for garnish)

  • 1 teaspoon salt

  • 1/2 teaspoon black pepper

  • 1 teaspoon Old Bay seasoning

For the top:
  • 1 tablespoon melted butter (for drizzling)

To thicken the sauce:
  • 2 tablespoons cornstarch

  • 3 tablespoons cold water 

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How Do You Make
Buffet Style 
Crab and Shrimp Casserole?

Preheat Oven:
Preheat your oven to 375°F (190°C). Grease a baking dish with butter.


Sauté Onions:

In a skillet, melt 2 tablespoons of butter over medium heat. Add thinly sliced onions and sauté until softened. Set aside and let cool until softened.


Prepare Casserole Mixture:

In a large mixing bowl, combine imitation crabmeat, extra-small shrimp, sautéed onions, mayonnaise, sour cream, cream cheese, 1 cup shredded cheddar cheese, 1 cup shredded mozzarella, garlic powder, dried parsley, salt, pepper, and Old Bay seasoning. Mix until well combined. Taste and adjust ingredients as needed.


Prepare Cornstarch Slurry:

In a small bowl, create a cornstarch slurry by mixing 3 tablespoons of cornstarch with 2-3 tablespoons of cold water. Adjust water quantity for desired consistency.


Thicken Sauce:

Add the cornstarch slurry to the casserole mixture and stir well to combine.

Assemble Casserole: Transfer the mixture to the greased baking dish, spreading it evenly. Sprinkle 1 cup shredded cheddar cheese and 1 cup shredded mozzarella inside the casserole.


Top with Cheese:

Sprinkle 1 cup shredded cheddar cheese and 1 cup shredded mozzarella on top of the casserole.



Bake in the preheated oven for 30-45 minutes or until the casserole is hot and bubbly, and the top is golden brown.

Drizzle with Butter:

Remove from the oven and let it rest for a few minutes. Drizzle 1 tablespoon of melted butter over the top before serving.

Garnish and Serve:

Garnish with fresh or dried parsley before serving.

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How Do You Store and Reheat Crab and Shrimp Casserole?



Once the casserole has cooled, store it in an airtight container in the refrigerator. Make sure to cover it well to prevent odors from the refrigerator affecting the taste.



Consider labeling the container with the date to help you keep track of freshness.

Use Within: Aim to consume the leftovers within 3-4 days for optimal freshness.

Oven Method:

Preheat Oven: Preheat your oven to around 350°F (175°C).

Cover: If possible, cover the casserole with aluminum foil to prevent excessive browning.

Reheat: Place the casserole in the preheated oven and heat until it's warmed through. This usually takes about 15-20 minutes, but the exact time may vary based on the portion size and your oven.

Check Temperature: For food safety, ensure that the internal temperature reaches 165°F (74°C).

Microwave Method:

Cover or Use a Microwave-Safe Lid: Cover the casserole with a microwave-safe lid or microwave-safe plastic wrap, leaving a small vent for steam to escape.

Reheat in Intervals: Heat the casserole in short intervals (e.g., 1-2 minutes) to prevent uneven heating. Stir between intervals to ensure even reheating.

Check Temperature: Similar to the oven method, ensure that the internal temperature reaches 165°F (74°C).

Additional Tips:

Add Moisture: If the casserole seems a bit dry after reheating, you can add a splash of broth, water, or additional sauce to restore moisture.

Fresh Garnish: Sprinkle a bit of fresh parsley or other herbs on top before serving to add a burst of color and flavor.

Avoid Overheating: To prevent the casserole from becoming overcooked and losing its texture, avoid overheating during the reheating process.

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Crab and Shrimp Casserole Variations:

Nut-Based Topping:

  • Almond or Pecan Crust: Create a topping with crushed almonds or pecans mixed with butter for added richness and crunch.

Herb Infusion:

  • Herb Butter: Mix chopped fresh herbs like thyme, rosemary, or dill with melted butter and drizzle it over the casserole before baking.

Vegetable Medley:

  • Zucchini or Asparagus: Incorporate sliced zucchini or asparagus into the casserole for a fresh and crisp element.

Citrusy Twist:
  • Lemon or Orange Zest: Add citrus zest to the mixture for a bright and refreshing flavor.

Smoky Flavor:
  • Smoked Paprika: Infuse a smoky essence by including a dash of smoked paprika to the seasoning.

Cajun Spice Infusion:
  • Cajun Spice Blend: Elevate your casserole with the vibrant and bold flavors of Cajun cuisine. Introduce a generous amount of Cajun spice blend to the mixture, creating a harmonious balance of heat and aromatic spices that will tantalize your taste buds.

Mediterranean-Inspired Toppings:
  • Kalamata Olives and Feta: Enhance the casserole with the classic Mediterranean combination of Kalamata olives and crumbled feta cheese. The olives add a briny flavor, while the feta brings a creamy and tangy element.

Low-Carb Twist:
  • Vegetable Ribbons: Embrace a low-carb option by incorporating colorful vegetable ribbons, such as zucchini or squash. These ribbons not only add a vibrant touch but also contribute a refreshing and nutritious element to your Cheesy Crab and Shrimp Casserole.

Roasted Garlic:
  • Roasted Garlic Cloves: Roast garlic cloves and mix them into the casserole for a mellow, savory flavor.

Spice It Up:
  • Jalapeños or Hot Sauce: Add sliced jalapeños or drizzle hot sauce into the mixture for a spicy kick.

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