
This lazy lobster casserole transforms succulent lobster meat into a comforting, creamy dish crowned with a buttery Ritz cracker topping that turns golden and crisp in the oven. After discovering this recipe during a coastal vacation, I've made it my go-to for special occasions when I want to impress without spending hours in the kitchen.
I first made this casserole for my partner's birthday when we couldn't go out to our favorite seafood restaurant. The look on their face when they took the first bite told me this would become our new celebration tradition.
Ingredients
- Lobster meat: provides sweet tender bites throughout the casserole and turns this into a luxurious meal
- White rice: creates the perfect foundation absorbing all the creamy goodness
- Heavy cream: builds a rich base that binds everything together
- Cheddar cheese: adds sharp flavor and creates wonderful stringy pulls when served
- Mayonnaise: might sound unusual but adds incredible richness and helps create the silky texture
- Dijon mustard: cuts through the richness with subtle tang
- Old Bay seasoning: brings authentic seafood flavor that pairs perfectly with lobster
- Garlic powder: provides aromatic depth without overwhelming the delicate lobster
- Ritz crackers: create the signature golden buttery topping that makes this dish memorable
- Unsalted butter: when mixed with the crackers transforms into a crispy golden crust
Step-by-Step Instructions
- Preheat Oven:
- Set your oven to 350°F to ensure it reaches the perfect temperature while you prepare the casserole. This moderate heat will allow the flavors to meld without burning the delicate topping.
- Mix The Base:
- Combine the lobster meat, rice, heavy cream, cheddar cheese, mayonnaise, Dijon mustard, Old Bay seasoning, garlic powder, salt, and pepper in a large bowl. Fold these ingredients together gently to keep the lobster pieces intact. The mixture should look creamy but not soupy.
- Prepare The Baking Dish:
- Grease your casserole dish thoroughly including the sides to prevent any sticking. This ensures easy serving and cleanup later. Use butter or cooking spray depending on your preference.
- Transfer The Mixture:
- Spoon the lobster mixture into your prepared dish ensuring an even layer. Smooth the top with a spatula to create a level surface for the topping. This helps the cracker topping distribute evenly.
- Create The Topping:
- Crush the Ritz crackers to varying sizes—some fine and some larger chunks for texture. Pour the melted butter over them and toss until every piece is coated. The butter should be completely absorbed by the crackers.
- Add The Topping:
- Sprinkle the buttery cracker mixture evenly across the entire surface of the casserole. Cover every inch to create a complete golden crust that will protect the creamy mixture beneath while baking.
- Bake To Perfection:
- Place the casserole in the center of your preheated oven and bake for 30 to 35 minutes. Look for the edges to bubble and the topping to turn a deep golden brown color. The center should be hot throughout.
- Rest And Garnish:
- Allow the casserole to rest for 5 minutes before serving. This sets the creamy filling and makes serving easier. Sprinkle with fresh parsley for color and a hint of brightness that balances the rich flavors.

My secret ingredient is actually the Old Bay seasoning. I discovered it years ago during a trip to Maryland and now keep it on hand specifically for this recipe. The distinctive blend of herbs and spices transforms this simple casserole into something that tastes like it came from a seaside restaurant.
Make Ahead Options
This casserole can be entirely assembled up to a day ahead and refrigerated without the topping. When ready to bake simply add the freshly prepared Ritz topping and increase the baking time by about 10 minutes since you’ll be starting with a cold casserole. The flavors actually develop nicely during refrigeration making this a perfect option for entertaining when you want to prepare in advance.
Perfect Pairings
This rich casserole pairs beautifully with simple vegetable sides. A bright salad with lemon vinaigrette or steamed asparagus with just a touch of butter creates the perfect balance. For wine I recommend a crisp unoaked Chardonnay or Sauvignon Blanc that won’t overwhelm the delicate lobster flavor but will cut through the richness of the sauce.
Variations To Try
While the classic version uses lobster this flexible recipe works beautifully with whatever seafood you have available. Try a combination of shrimp and scallops for a less expensive option or even canned tuna for a budget-friendly weeknight version. You can also experiment with different cheese combinations replacing some of the cheddar with Gruyère or Parmesan for more complex flavor.

Frequently Asked Questions
- → Can I substitute the lobster with other seafood?
Yes, you can replace lobster with shrimp, crab, or even a combination of seafood depending on your preference.
- → How do I prevent the casserole from being too dry?
Ensure you use enough heavy cream and bind the ingredients well. Do not overbake to maintain a moist texture.
- → Can I prepare this dish ahead of time?
Absolutely! Assemble the casserole up to the point of adding the topping, and refrigerate. Add the topping just before baking.
- → What can I pair with this dish?
This casserole pairs wonderfully with a crisp green salad, roasted vegetables, or a fresh baguette on the side.
- → How do I store leftovers?
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat in the oven for the best results.
- → Can I use pre-cooked lobster for this dish?
Yes, using pre-cooked lobster meat works perfectly and simplifies the preparation process.