I still remember the first time I pulled this shrimp casserole from the oven: the top was bronzed, cheese bubbly, and the kitchen smelled like a seaside diner. This dish is an easy, satisfying way to serve large shrimp with a crunchy panko topping and two cheeses. It works for a relaxed weeknight, a family dinner when you want something a little special, or for feeding guests without fuss. If you want the tested recipe I use as my baseline, I keep a bookmarked copy on this shrimp casserole recipe page for quick reference.
Why you’ll love this dish
This casserole balances speed, texture, and flavor. The shrimp cook almost instantly, mayo keeps the filling creamy without adding more cream, and a buttered panko crust gives that irresistible crunch. It is kid-friendly, quick to assemble, and scales well up or down depending on how many people you need to feed. Make it when you want a bright seafood flavor without spending hours at the stove.
"Comfort food with a seaside twist. Creamy, cheesy shrimp that comes together faster than expected and always disappears fast."
Because shrimp cook so quickly, this recipe is ideal for busy evenings or for making ahead and finishing in the oven when guests arrive. For more notes and the original format I compare against, I often open the shrimp casserole recipe page while I prep.
Preparing Shrimp Casserole
Step-by-step overview
- Briefly poach the shrimp in heavily seasoned boiling water so they turn opaque but stay tender.
- Toss the cooked shrimp with mayo, garlic powder, black pepper, and shredded cheeses to make a creamy filling.
- Spread the mixture in a buttered casserole dish, top with buttered panko, and bake until set and golden.
This prepares you for a cook time that is mostly oven time and a hands-on window of only a few minutes at the stove.
What you’ll need
- 2 pounds large shrimp (21–24 count), peeled and deveined
- 1 tablespoon Old Bay seasoning (use less for a milder taste)
- 1 tablespoon salt (divided; some goes in the boiling water)
- 2/3 cup mayonnaise (substitute plain Greek yogurt for a tangier, lighter option)
- 1/2 teaspoon garlic powder
- 1/2 teaspoon ground black pepper
- 1 tablespoon butter (plus extra to grease dish)
- 1/2 cup panko bread crumbs (gluten-free panko works if needed)
- 4 ounces shredded mozzarella cheese
- 4 ounces shredded medium cheddar cheese
Notes and substitutions
- Frozen shrimp should be fully thawed and patted dry before poaching to avoid watering down the filling.
- Swap smoked cheddar or pepper jack for cheddar if you want more depth or heat, respectively.
- For a lower-fat version, use light mayonnaise or a 50/50 mayo-Greek yogurt mix. For a crispier top, mix in a tablespoon of grated Parmesan with the panko. For the full recipe text and a printable version, check this shrimp casserole recipe page.
Step-by-step instructions
- Preheat the oven to 375°F (190°C). Use about 1 teaspoon of butter to grease a 2 1/2-quart casserole dish.
- Fill a large pot with water and bring to a rolling boil. Add 1 tablespoon salt and 1 tablespoon Old Bay to the water.
- Drop the shrimp into the boiling water. Cook only about 30 seconds or until shrimp turn opaque. Drain immediately and transfer the shrimp to a mixing bowl. Overcooking makes shrimp rubbery, so watch closely.
- Stir the mayonnaise, garlic powder, and black pepper into the shrimp until every piece is lightly coated. Taste and adjust pepper if desired.
- Fold in the shredded mozzarella and cheddar until everything is combined and the mixture looks evenly cheesy.
- Spoon the shrimp mixture into the prepared casserole dish, spreading it into an even layer.
- Melt 1 tablespoon butter, toss it with the panko until moistened, and sprinkle the breadcrumb mixture evenly over the shrimp.
- Bake uncovered for 13 to 15 minutes, or until the center reaches 145°F. For a more golden crust, place under the broiler for 1 to 2 minutes while watching closely to avoid burning.
- Let the casserole rest for 15 minutes before serving so it sets and is easier to portion.
Best ways to enjoy it
Serve slices or scoops of the casserole over a bed of steamed rice for a family dinner, alongside crusty bread for spooning up the creamy bits, or with a crisp green salad for contrast. A lemon wedge on the side brightens the shrimp; a scattering of chopped parsley or chives adds color. For a simple plate, I like buttered toast points to scoop the casserole like an appetizer.
Storage and reheating tips
- Cool leftovers to room temperature no longer than two hours after cooking, then refrigerate in an airtight container.
- Refrigerated casserole will keep 3 to 4 days. Reheat individual portions in a microwave until hot or in a 350°F oven for 10 to 12 minutes to restore some crispness.
- To freeze: wrap the cooled casserole tightly or transfer to a freezer-safe container and freeze up to 2 months. Thaw in the refrigerator overnight before reheating.
- Always reheat to at least 165°F for food safety.
Pro chef tips
- Don’t overcook the shrimp in the poaching step. They only need to go opaque; residual oven time finishes them gently.
- Pat shrimp dry before tossing with mayo to avoid a watery filling.
- For extra crunch, mix some chopped toasted almonds into the panko topping.
- If using pre-shredded cheese, choose brands without added starch for better melt and texture.
- If you want a brighter flavor, fold in a teaspoon of fresh lemon zest with the cheeses.
Recipe variations
- Garlic herb: add 1 tablespoon minced fresh parsley and 1 teaspoon lemon zest to the filling.
- Spicy kick: fold in 1/4 teaspoon cayenne or use pepper jack cheese.
- Lighter version: swap mayo for half Greek yogurt and half light mayo; use reduced-fat cheese.
- Gluten-free: replace panko with gluten-free breadcrumbs or crushed cornflakes.
- Cheesy bake for two: halve the recipe and use a 1-quart baking dish, reducing bake time slightly.
Common questions
How long does this shrimp casserole take from start to finish?
Hands-on time is about 15 minutes, mostly for boiling shrimp and assembling. Bake time is 13 to 15 minutes, plus a 15-minute rest, so plan roughly 45 minutes total.
Can I use smaller shrimp or frozen shrimp?
You can use smaller shrimp, but reduce the poaching time proportionally so they do not overcook. If using frozen shrimp, thaw fully and pat dry before cooking.
What if I do not have Old Bay seasoning?
Use a mix of celery salt, paprika, and a pinch of cayenne or black pepper to approximate Old Bay. Start light and adjust to taste.
Is it safe to reheat shrimp casserole more than once?
It is safer to reheat only the portion you plan to eat. Repeated reheating increases food-safety risk. Refrigerate leftovers promptly and reheat them once to 165°F.
Can I assemble this ahead of time?
Yes. Assemble and cover the casserole, then keep refrigerated up to 24 hours. Add the panko topping just before baking for the best texture. For more timing and prep tips, see the shrimp casserole recipe page.
Shrimp Casserole
Ingredients
Method
- Preheat the oven to 375°F (190°C). Use about 1 teaspoon of butter to grease a 2 1/2-quart casserole dish.
- Fill a large pot with water and bring to a rolling boil. Add 1 tablespoon salt and 1 tablespoon Old Bay to the water.
- Drop the shrimp into the boiling water. Cook only about 30 seconds or until shrimp turn opaque. Drain immediately and transfer the shrimp to a mixing bowl.
- Stir the mayonnaise, garlic powder, and black pepper into the shrimp until every piece is lightly coated.
- Fold in the shredded mozzarella and cheddar until everything is combined.
- Spoon the shrimp mixture into the prepared casserole dish, spreading it into an even layer.
- Melt 1 tablespoon butter, toss it with the panko until moistened, and sprinkle the breadcrumb mixture evenly over the shrimp.
- Bake uncovered for 13 to 15 minutes, or until the center reaches 145°F.
- For a more golden crust, place under the broiler for 1 to 2 minutes while watching closely.
- Let the casserole rest for 15 minutes before serving.
