
This no-fuss lobster casserole turns tasty lobster chunks into a warm, silky dish topped with a crunchy, butter-soaked Ritz cracker crust that bakes up nice and golden. I stumbled on this gem during a beach trip, and now it's my favorite way to wow guests without slaving away in the kitchen for a special dinner.
The first time I whipped this up was for my sweetheart's birthday when our go-to seafood joint was booked solid. Their expression after that initial taste told me we'd found our new celebration meal tradition.
Ingredients
- Lobster meat: delivers sweet juicy morsels throughout and turns an ordinary casserole into something fancy
- White rice: works as the perfect base that soaks up all that creamy sauce
- Heavy cream: makes a velvety foundation that holds everything in place
- Cheddar cheese: brings a tangy kick and those satisfying cheese pulls when you dig in
- Mayonnaise: sounds weird but trust me, it adds amazing smoothness and depth
- Dijon mustard: balances the richness with a bit of zing
- Old Bay seasoning: packs that classic seafood punch that works wonders with lobster
- Garlic powder: adds flavor backbone without stealing the show from delicate lobster
- Ritz crackers: form that unforgettable buttery, crunchy top layer everyone fights over
- Unsalted butter: teams up with crackers to create that irresistible crispy topping
Step-by-Step Instructions
- Preheat Oven:
- Get your oven going at 350°F while you put everything together. This temp lets flavors mix properly without burning that tasty topping.
- Mix The Base:
- Toss lobster meat, rice, heavy cream, cheddar cheese, mayonnaise, Dijon mustard, Old Bay seasoning, garlic powder, salt, and pepper in a big bowl. Mix everything carefully so you don't break up the lobster too much. You want it creamy but not runny.
- Prepare The Baking Dish:
- Coat your dish completely with butter or cooking spray, sides too. This stops stuff from sticking and makes cleanup way easier later.
- Transfer The Mixture:
- Dump your lobster mix into the greased dish and spread it out evenly. Flatten the top with a spoon so the cracker topping can go on nice and even.
- Create The Topping:
- Smash up those Ritz crackers into different sized pieces for texture. Drizzle melted butter all over and mix until every cracker bit gets coated. The crackers should soak up all that butter.
- Add The Topping:
- Scatter your buttery cracker mix all over the casserole surface. Don't leave any spots uncovered so you get that perfect protective crust everywhere.
- Bake To Perfection:
- Stick the dish in the middle of your hot oven for about 30-35 minutes. You'll know it's done when the edges bubble up and the topping turns dark golden. Everything should be heated through.
- Rest And Garnish:
- Let it sit for 5 minutes before you dig in. This helps everything firm up a bit for easier serving. Throw some fresh parsley on top for color and freshness against all that richness.

The game-changer in this dish is definitely the Old Bay seasoning. I picked it up during a Maryland vacation years back and now I always keep some just for making this. That special mix of herbs and spices makes a basic casserole taste like something from a fancy seafood place.
Make Ahead Options
You can put this whole thing together a day early and keep it in the fridge without the topping. When you're ready to cook, just add your fresh Ritz mixture on top and bake about 10 minutes longer since it'll be cold from the fridge. The flavors actually get better overnight, so it's perfect when you've got company coming and want to get the work done early.
Perfect Pairings
This hearty dish goes really well with light veggie sides. Try a fresh salad with lemony dressing or some green asparagus with a tiny bit of butter for balance. For drinks, go with a light Chardonnay or Sauvignon Blanc that won't fight with the lobster but will cut through all that creaminess.
Variations To Try
The original calls for lobster but this easy dish works with whatever seafood you can get your hands on. Mix shrimp and scallops for a cheaper option or even try canned tuna when you're watching your budget. You can also play around with the cheese by swapping some cheddar for Gruyère or Parmesan to change up the flavor profile.

Common Recipe Questions
- → Can I substitute the lobster with other seafood?
You can swap lobster for shrimp, crab or mix different seafood types based on what you like best.
- → How do I prevent the casserole from being too dry?
Add plenty of heavy cream and mix everything well. Don't leave it in the oven too long to keep it nice and juicy.
- → Can I prepare this dish ahead of time?
Sure thing! Put everything together except the topping and stick it in the fridge. Just add those crackers right before you pop it in the oven.
- → What can I pair with this dish?
This casserole tastes amazing with a light green salad, some oven-roasted veggies, or a chunk of fresh bread on the side.
- → How do I store leftovers?
Pop any extras in a sealed container and keep them in the fridge for up to 3 days. Warm them up in the oven for the tastiest results.
- → Can I use pre-cooked lobster for this dish?
Pre-cooked lobster works great and makes cooking this dish way quicker and easier.