This Best Shrimp Casserole Recipe features succulent shrimp tossed in a creamy, cheesy sauce and topped with golden, buttery breadcrumbs. In just 30 minutes, you can have a gourmet-style meal that is fancy enough for a holiday gathering yet simple enough for a busy weeknight. It is the ultimate comfort food for seafood lovers who want maximum flavor with minimal effort.
Table of Contents
Why You Will Love This Recipe
This recipe is a guaranteed winner that has been tested and approved by even the toughest critics. You will love it because it strikes the perfect balance between a decadent, cheesy texture and a satisfyingly crunchy topping. Since it only takes 30 minutes from start to finish, it is a fantastic solution for those evenings when you want a high-quality meal without spending hours in the kitchen. Whether you are hosting a potluck or celebrating a family birthday, this dish always leaves the pan empty.
Ingredients
- 2 lbs large shrimp (21-24 count), peeled and deveined
- 1 Tbsp Old Bay Seasoning
- 1 Tbsp salt (for the cooking water)
- 2/3 cup mayonnaise
- 1/2 tsp garlic powder
- 1/2 tsp ground black pepper
- 1 Tbsp butter (melted, plus extra for greasing the pan)
- 1/2 cup panko bread crumbs
- 4 oz shredded mozzarella cheese
- 4 oz shredded medium cheddar cheese
Step-by-Step Instructions
- Prepare the Equipment: Preheat your oven to 375°F. Take a 2 1/2 quart casserole dish, a 9×9 baking pan, or a 10-inch oven-safe skillet and grease it generously with butter.
- Boil the Shrimp: Fill a large pot with water and bring it to a rolling boil. Add 1 tablespoon of salt and 1 tablespoon of Old Bay Seasoning. Drop the shrimp into the water and cook for exactly 30 seconds until they are opaque. Immediately strain the shrimp and move them to a bowl to cool for 10 minutes.
- Dry the Shrimp: Once cooled slightly, use a paper towel to pat the shrimp dry and soak up any water that has collected at the bottom of the bowl. This prevents the casserole from becoming runny.
- Mix the Filling: In the bowl with the shrimp, stir in the mayonnaise, garlic powder, and black pepper until every shrimp is well coated. Fold in the shredded mozzarella and cheddar cheese.
- Assemble: Transfer the creamy shrimp mixture into your prepared baking dish and spread it out into an even layer.
- Add the Topping: In a small bowl, combine 1 tablespoon of melted butter with the panko bread crumbs. Stir until the crumbs are evenly moistened, then sprinkle them over the top of the shrimp.
- Bake and Broil: Place the dish in the oven and bake uncovered for 13 to 15 minutes, or until the center reaches an internal temperature of 145°F. Switch the oven to broil for 1 to 2 minutes to get the breadcrumbs perfectly golden brown.
- Rest and Serve: Let the casserole rest for 15 minutes before serving. This allows the sauce to set and the flavors to meld.
Expert Tips / Pro Tips
Thaw Properly: If you are using frozen shrimp, ensure they are completely thawed according to the package instructions before boiling. Using partially frozen shrimp will result in uneven cooking.
Avoid Overcooking: Shrimp turn rubbery very quickly. Stick to the 30-second boil time; they will finish cooking to perfection in the oven.
Manage Moisture: If you notice excess liquid in the dish after baking, do not panic. This often happens if the shrimp were previously frozen. Simply use the corner of a folded paper towel to gently soak up any pooling liquid at the edges of the dish.
Use Quality Cheese: For the best melt and flavor, try grating your own cheese from a block rather than using pre-shredded bags, which often contain anti-caking agents.
Breadcrumb Swap: If you do not have Panko, you can use crushed Ritz crackers or traditional Italian breadcrumbs for a different texture and flavor profile.
Spice it Up: For those who enjoy a bit of heat, add a pinch of red pepper flakes to the mayonnaise mixture or use a “hot” version of Old Bay Seasoning.
Add Vegetables: To make it a more well-rounded meal, you can stir in some steamed broccoli florets or sautéed bell peppers before baking.
Cheese Options: While mozzarella and cheddar are classic, you can substitute Monterey Jack for a creamier melt or Parmesan for a saltier bite.
Serving Suggestions
This Best Shrimp Casserole Recipe is incredibly versatile and pairs well with a variety of sides. To soak up the delicious creamy sauce, serve it over a bed of white rice, quinoa, or fluffy mashed potatoes. If you prefer a lighter meal, it goes beautifully with roasted carrots, green beans almondine, or a crisp Caesar salad. For a true comfort food experience, serve it with a side of crusty sourdough or garlic focaccia bread to ensure not a drop of sauce goes to waste.
To Refrigerate: Cover the dish tightly with plastic wrap or transfer leftovers to an airtight container. It will stay fresh in the refrigerator for 2 to 3 days.
To Reheat: For the best results, reheat in the oven at 350°F or in an air fryer until warmed through. This helps maintain the crunch of the breadcrumbs. Avoid the microwave if possible, as it can make the shrimp rubbery.
Freezing: Freezing is not recommended for this specific recipe, as the mayonnaise-based sauce can separate and the shrimp texture may degrade upon thawing.
Make-Ahead Instructions: You can prepare the shrimp and cheese mixture up to 24 hours in advance. Store it in the baking dish in the fridge, but wait to add the buttery breadcrumbs until just before you are ready to bake to ensure they stay crisp.
Nutrition Information
| Nutrient | Amount Per Serving |
|---|---|
| Calories | 354 kcal |
| Total Carbohydrates | 4g |
| Protein | 30g |
| Total Fat | 24g |
| Servings | 8 |
Best Shrimp Casserole Recipe
Ingredients
Equipment
Method
- Preheat your oven to 375°F. Take a 2 1/2 quart casserole dish, a 9×9 baking pan, or a 10-inch oven-safe skillet and grease it generously with butter.
- Fill a large pot with water and bring it to a rolling boil. Add 1 tablespoon of salt and 1 tablespoon of Old Bay Seasoning. Drop the shrimp into the water and cook for exactly 30 seconds until they are opaque. Immediately strain the shrimp and move them to a bowl to cool for 10 minutes.2 lbs large shrimp (21-24 count), 1 Tbsp Old Bay Seasoning, 1 Tbsp salt
- Once cooled slightly, use a paper towel to pat the shrimp dry and soak up any water that has collected at the bottom of the bowl. This prevents the casserole from becoming runny.2 lbs large shrimp (21-24 count)
- In the bowl with the shrimp, stir in the mayonnaise, garlic powder, and black pepper until every shrimp is well coated. Fold in the shredded mozzarella and cheddar cheese.2 lbs large shrimp (21-24 count), 2/3 cup mayonnaise, 1/2 tsp garlic powder, 1/2 tsp ground black pepper, 4 oz shredded mozzarella cheese, 4 oz shredded medium cheddar cheese
- Transfer the creamy shrimp mixture into your prepared baking dish and spread it out into an even layer.
- In a small bowl, combine 1 tablespoon of melted butter with the panko bread crumbs. Stir until the crumbs are evenly moistened, then sprinkle them over the top of the shrimp.1 Tbsp butter, 1/2 cup panko bread crumbs
- Place the dish in the oven and bake uncovered for 13 to 15 minutes, or until the center reaches an internal temperature of 145°F. Switch the oven to broil for 1 to 2 minutes to get the breadcrumbs perfectly golden brown.
- Let the casserole rest for 15 minutes before serving. This allows the sauce to set and the flavors to meld.
Notes
FAQ
Can I use pre-cooked shrimp for this recipe?
While you can use pre-cooked shrimp, the texture is much better when you start with raw shrimp and give them a quick 30-second blanch. If using pre-cooked shrimp, skip the boiling step and go straight to mixing, but be aware they may become slightly tougher in the oven.
What size shrimp is best for a casserole?
A 21-24 count (large) shrimp is ideal. They are big enough to remain juicy and succulent during the baking process without getting lost in the cheese and breadcrumbs.
Is this recipe gluten-free?
As written, this recipe contains panko breadcrumbs which have gluten. To make it gluten-free, simply substitute the panko with your favorite gluten-free breadcrumb alternative or crushed gluten-free crackers.
Why is my casserole watery?
Wateriness usually comes from shrimp that weren’t patted dry enough or were overcooked, causing them to release their juices. Simply dab the excess moisture with a paper towel before serving.