I brought this shrimp casserole to my dad’s birthday celebration with my sisters and their families—the ultimate test for any new recipe. It disappeared so quickly that I knew immediately it was a winner. This beginner-friendly dish layers tender, creamy, cheesy shrimp under a golden, crunchy breadcrumb topping that bakes to perfection in just 30 minutes. It feels fancy enough for holiday gatherings and special occasions, yet it’s simple enough to throw together on a busy weeknight. The combination of melted mozzarella and cheddar with perfectly seasoned shrimp creates comfort food at its finest.
Why You’ll Love This Dish
This shrimp casserole strikes the perfect balance between impressive and effortless. It comes together in about 30 minutes from start to finish, making it ideal for those nights when you want something special without spending hours in the kitchen. The creamy, cheesy filling paired with crispy buttered breadcrumbs delivers satisfying texture in every bite. It’s elegant enough to grace your holiday table alongside other festive dishes, yet simple enough for regular family dinners. Best of all, you can make it ahead and transport it easily to potlucks or dinner parties—it tastes delicious whether served warm or at room temperature. The recipe scales beautifully to feed a crowd, and leftovers keep well for quick lunches or dinners throughout the week.
“I just made this and it was absolutely delicious! I added broccoli and mushrooms, sprinkled extra garlic on it, served it over quinoa and it was gone in no time!” — Lynne
How This Recipe Comes Together
The preparation is wonderfully straightforward, even for beginners. You’ll start by quickly boiling the shrimp in seasoned water for just 30 seconds until they’re barely cooked through—this prevents them from becoming rubbery in the oven. After draining and cooling, you’ll mix the shrimp with a simple but flavorful combination of mayonnaise, garlic powder, and pepper, then fold in shredded mozzarella and cheddar cheese. The mixture gets spread into a buttered baking dish, then topped with panko breadcrumbs that have been tossed with melted butter for that irresistible golden crunch. A quick 15-minute bake followed by a brief broil creates the perfect contrast between the creamy interior and crispy topping. The casserole rests for 15 minutes before serving, allowing the flavors to settle and making it easier to portion.
What You’ll Need
For the shrimp:
- 2 pounds large shrimp, 21 to 24 count, peeled and deveined (fresh or properly thawed frozen work equally well)
- 1 tablespoon Old Bay seasoning, plus 1 tablespoon salt for the cooking water
For the cheesy filling:
- ⅔ cup mayonnaise
- ½ teaspoon garlic powder
- ½ teaspoon ground black pepper
- 4 ounces shredded mozzarella cheese
- 4 ounces shredded medium cheddar cheese
For the topping:
- 1 tablespoon butter, plus more to grease the pan
- ½ cup panko breadcrumbs
Step-by-Step Instructions
Preheat your oven to 375°F. Generously grease a 2½-quart casserole dish, 10-inch deep oven-safe skillet, 9×9-inch baking dish, or 9-inch pie pan with butter.
Bring a large pot of water to a rolling boil—fill a 6-quart pot about three-quarters full. Add 1 tablespoon each of salt and Old Bay seasoning to the boiling water. Add the shrimp and cook for just 30 seconds until they turn opaque and are barely cooked through. Don’t overcook or they’ll become rubbery.
Remove the shrimp immediately with a strainer and transfer to a large mixing bowl. Let them cool for about 10 minutes, then drain any water that has collected at the bottom or use a paper towel to soak up excess liquid. Keeping the shrimp dry is important for the filling to stick properly.
Add the mayonnaise, garlic powder, and black pepper to the cooled shrimp. Stir well to coat every piece evenly. Sprinkle both cheeses over the shrimp and stir again until everything is thoroughly combined. Spread the shrimp mixture evenly into your prepared baking dish.
In a separate small bowl or measuring cup, melt 1 tablespoon of butter. Stir the panko breadcrumbs into the melted butter until all the crumbs are evenly moistened. Sprinkle this breadcrumb mixture evenly over the top of the shrimp filling.
Bake uncovered at 375°F for 13 to 15 minutes, or until the center reaches 145°F on an instant-read thermometer. Switch your oven to broil and broil for 1 to 2 minutes until the breadcrumbs turn golden brown. Watch carefully to prevent burning.
Let the casserole rest for 15 minutes before serving. This allows the filling to set slightly and makes portioning much easier.
Best Ways to Enjoy It
This shrimp casserole pairs beautifully with a variety of sides that complement its rich, creamy nature. Serve it alongside fluffy white rice, nutty quinoa, or creamy mashed potatoes to soak up all those delicious flavors. For lighter options, try roasted carrots, green beans almondine, or air fryer Brussels sprouts. A fresh tomato cucumber mozzarella salad or classic Caesar salad adds brightness and crunch that balances the richness of the casserole. Don’t forget crusty bread—warm sourdough or homemade focaccia is perfect for mopping up every last bit from your plate. For a more substantial meal, serve it over spaghetti squash or alongside roasted vegetables. The casserole is versatile enough to work as either a main course or as part of a larger spread at holiday gatherings.
Storage and Reheating Tips
Store leftover shrimp casserole covered in the refrigerator for 2 to 3 days. The flavors continue to develop as it sits, making leftovers particularly tasty.
To reheat, warm individual portions in the oven or air fryer to maintain the crispy breadcrumb topping. If you haven’t added the breadcrumb topping yet, you can mix it fresh before reheating for optimal crunch.
Make the casserole ahead by spreading the shrimp filling into the prepared dish, covering it with plastic wrap, and refrigerating for up to 24 hours (or even 3 days) before baking. When ready to serve, add the breadcrumb topping and bake as directed.
Freezing the cooked casserole is not recommended, as the texture of the shrimp and creamy filling can become compromised when thawed.
If you notice excess liquid pooling in the bottom of your casserole after baking, don’t worry—some shrimp release extra water during cooking. Simply use a paper towel to soak up the liquid before serving.
Tricks for Success
Thaw frozen shrimp properly according to package instructions to prevent excess water release. Improperly thawed shrimp can make your filling watery.
Don’t overcook the shrimp during the initial boiling step. Just 30 seconds in boiling water is enough—they’ll cook more in the oven. Overcooked shrimp turn tough and rubbery.
Drain the shrimp thoroughly after boiling and pat away any excess moisture with paper towels. Wet shrimp will create a runny filling that won’t stick together properly.
Use full-fat mayonnaise for the best creamy texture. Light mayo can make the filling too thin and less flavorful.
Shred your own cheese from blocks rather than using pre-shredded. Freshly shredded cheese melts better and creates a creamier filling without the anti-caking agents found in packaged shredded cheese.
Mix the breadcrumbs thoroughly with melted butter so every crumb is coated. This ensures even browning and crunch.
Watch the casserole carefully during broiling—breadcrumbs can go from golden to burnt very quickly. Stay close to the oven during this step.
Let the casserole rest the full 15 minutes before serving. This resting time allows the filling to set and makes serving much neater.
Creative Twists
Add vegetables like chopped broccoli, sliced mushrooms, diced bell peppers, or spinach to the shrimp mixture for extra nutrition and flavor.
Stir in lump crab meat along with the shrimp for a luxurious seafood combination that feels extra special.
Try bay scallops instead of or in addition to shrimp for a different seafood experience.
Add extra garlic—either increase the garlic powder or stir in minced fresh garlic for more pronounced garlic flavor.
Mix in diced jalapeños or a pinch of cayenne pepper for a spicy kick.
Use different cheese combinations like gruyere and parmesan, pepper jack for heat, or Swiss and fontina for a milder flavor.
Top with crispy fried onions instead of breadcrumbs for a different crunchy element.
Stir in chopped fresh herbs like parsley, dill, or chives for brightness and color.
Add a squeeze of lemon juice to the filling for a citrusy brightness that cuts through the richness.
Layer the casserole over cooked pasta for a baked shrimp mac and cheese variation.
Your Questions Answered
Can I use pre-cooked shrimp?
While you can, raw shrimp work better for this recipe since they’ll cook perfectly during the baking process. Pre-cooked shrimp can easily become overcooked and rubbery. If you must use pre-cooked, skip the boiling step and add them directly to the filling, then reduce the baking time.
What size baking dish should I use?
A 2½-quart casserole dish works perfectly, but you can also use a 10-inch deep oven-safe skillet, 9×9-inch square baking dish, or 9-inch pie pan. The key is having enough depth to hold the shrimp mixture comfortably.
Why is there liquid in my casserole after baking?
Some shrimp release extra water when they’re overcooked during the initial boiling or if they were thawed improperly. Simply use paper towels to soak up any excess liquid before serving. This doesn’t affect the flavor, just the appearance.
Can I make this without Old Bay seasoning?
Old Bay is a blend of celery salt, herbs, spices, and paprika. You can create your own substitute using these ingredients, or use a different seafood seasoning blend you prefer.
How do I prevent rubbery shrimp?
The key is not overcooking them. Boil for only 30 seconds initially, and don’t bake the casserole longer than the 13 to 15 minutes specified. Shrimp cook very quickly and become tough when overcooked.
Can I transport this to a potluck?
Absolutely! This casserole is perfect for potlucks since it tastes delicious both warm and at room temperature. Just bake it, let it rest, then cover and transport. It’s easy to serve directly from the dish.
What can I substitute for mayonnaise?
Greek yogurt or sour cream can work as substitutes, though they’ll create a tangier flavor and slightly different texture. For best results, stick with full-fat mayonnaise.
Print
Cheesy Shrimp Casserole
- Total Time: 45 minutes
- Yield: 4 servings
- Diet: Seafood
Description
A creamy and cheesy shrimp casserole topped with crispy breadcrumbs, perfect for family dinners or special occasions.
Ingredients
- 2 pounds large shrimp, peeled and deveined
- 1 tablespoon Old Bay seasoning
- 1 tablespoon salt
- ⅔ cup mayonnaise
- ½ teaspoon garlic powder
- ½ teaspoon ground black pepper
- 4 ounces shredded mozzarella cheese
- 4 ounces shredded medium cheddar cheese
- 1 tablespoon butter, plus more to grease the pan
- ½ cup panko breadcrumbs
Instructions
- Preheat your oven to 375°F. Grease a casserole dish with butter.
- Boil a large pot of water with salt and Old Bay seasoning. Add shrimp and cook for 30 seconds until opaque.
- Remove shrimp and let cool before draining excess moisture.
- Mix shrimp with mayonnaise, garlic powder, and black pepper. Stir in both cheeses.
- Spread the shrimp mixture in the prepared baking dish.
- Melt butter and mix with panko breadcrumbs. Sprinkle over the shrimp mixture.
- Bake for 13 to 15 minutes or until center reaches 145°F. Broil for 1-2 minutes until golden brown.
- Let casserole rest for 15 minutes before serving.
Notes
Shrimp casserole can be made ahead and stored in the refrigerator for up to 3 days. Reheat in the oven for best results.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Main Course
- Method: Baking
- Cuisine: American