If you’re searching for a comforting dish that feels like a warm hug on a chilly evening, look no further than this Crab Casserole with Swiss and Cheddar Cheese Recipe. This creamy, cheesy casserole brings together flaky crab meat with the perfect balance of Swiss and sharp cheddar cheeses, creating layers of rich flavor that melt in your mouth. It’s not just a casserole; it’s a celebration of textures and tastes that’s incredibly easy to prepare but endlessly rewarding to eat. Whether it’s a weeknight dinner or a special occasion, this dish is guaranteed to become a new favorite.

Ingredients You’ll Need
The beauty of this recipe lies in its simplicity and the way each ingredient plays a precise role in crafting the final dish. Every component enhances the flavor, texture, or appearance, making the casserole a harmonious blend of creamy, cheesy, and slightly tangy notes with a touch of aromatic seasoning.
- Swiss cheese (1 cup, shredded): Adds a mild, nutty flavor that melts beautifully for that luscious texture.
- Cream cheese (4 ounces, softened): Provides creaminess and richness that binds everything together smoothly.
- Mayonnaise (â…“ cup): Boosts moisture and a subtle tang for depth without overpowering.
- Sour cream (¼ cup): Brings a gentle tartness that balances the richness of the cheeses.
- Onion (1 tablespoon, minced): Contributes a mild, sweet bite ensuring every spoonful is flavorful.
- Green pepper (1 tablespoon, minced): Offers slight crunch and fresh, bright notes.
- Green onions (3, chopped): Elevate the dish with their sharp, fresh taste and vibrant color.
- Garlic powder (½ teaspoon): Enhances warmth and savory undertones.
- Mustard powder (½ teaspoon): Adds subtle heat and complexity to the seasoning.
- Old Bay seasoning (½ teaspoon): Infuses that unmistakable seafood-friendly spice that makes the crab shine.
- Imitation crab meat (14 ounces, flake style): The star of the show, tender and flavorful, lending its signature sweetness.
- Cheddar cheese (½ cup, shredded): Brings sharpness and a beautiful golden crust when baked.
- Chives (1 tablespoon, finely chopped): Provide a delicate oniony aroma and fresh green garnish.
- Steamed rice or pasta: Perfect for serving, soaking up all the creamy goodness from the casserole.
How to Make Crab Casserole with Swiss and Cheddar Cheese Recipe
Step 1: Preheat Your Oven and Prepare the Dish
Start by setting your oven to 350°F (175°C) and lightly greasing your casserole dish. This ensures your delicious casserole won’t stick and will develop a beautiful, slightly golden crust as it bakes. Proper preparation upfront makes all the difference in the outcome!
Step 2: Create the Creamy Base
In a large bowl, beat together the softened cream cheese, mayonnaise, and sour cream until completely smooth. This velvety mixture forms the luscious foundation of your crab casserole with Swiss and cheddar cheese recipe, delivering that rich, dreamy texture you’ll crave.
Step 3: Infuse Aromatics and Seasonings
Next, stir in the minced onion, green pepper, chopped green onions, garlic powder, mustard powder, and Old Bay seasoning. These carefully selected spices and vegetables layer the casserole with savory, tangy, and slightly spicy notes that perfectly complement the sweetness of the crab.
Step 4: Fold in Crab and Cheeses
Gently fold in the flaked imitation crab meat along with Swiss cheese, cheddar cheese, and fresh chives. Mixing gently ensures that the delicate crab stays tender and the cheeses meld seamlessly without overworking the mixture.
Step 5: Bake to Perfection
Transfer the final mix into your prepared casserole dish and bake uncovered for 25 to 30 minutes. You’re looking for a bubbly, golden top that signals the cheese is perfectly melted and the casserole is heated through. This step brings all the flavors to life with an irresistible inviting aroma.
Step 6: Serve Warm and Enjoy
This crab casserole shines best when served warm. Spoon it over freshly steamed rice or your favorite pasta to create a complete, satisfying meal that bursts with cozy, cheesy goodness.
How to Serve Crab Casserole with Swiss and Cheddar Cheese Recipe

Garnishes
Sprinkle a few extra chopped chives or green onions just before serving for a fresh pop of color and a slight oniony kick. A lemon wedge on the side can add a bright, zesty contrast that lifts the flavors beautifully.
Side Dishes
Since the casserole is rich and filling, light sides such as a crisp garden salad, steamed green beans, or roasted asparagus balance the plate perfectly. These greens provide crunch and freshness, enhancing the overall dining experience.
Creative Ways to Present
For a bit of flair, try serving individual portions in ramekins with a little baked breadcrumb topping for texture. Alternatively, present the casserole atop a bed of wild rice for an earthy twist that complements the creamy textures of the dish.
Make Ahead and Storage
Storing Leftovers
Place any leftover crab casserole in an airtight container and refrigerate. It will keep well for up to 3 days, making it an excellent option for quick lunches or dinners during the week.
Freezing
You can freeze this casserole, but for best texture, freeze before baking. Wrap tightly with plastic film and foil, then freeze for up to 2 months. Thaw overnight in the fridge before baking as usual to retain its creamy, cheesy perfection.
Reheating
Reheat leftovers gently in the oven at 325°F (165°C) until warmed through, about 15 to 20 minutes. This helps maintain the dish’s creamy texture and prevents the cheese from becoming rubbery, unlike microwave reheating which can be uneven.
FAQs
Can I use real crab instead of imitation crab meat?
Absolutely! Using fresh or canned real crab will elevate the flavor even more, offering a sweeter, more authentic seafood taste. Just be gentle when folding in so you don’t break up the crab too much.
Can I make this casserole dairy-free or low-fat?
While dairy-free substitutions are possible—like vegan cream cheese and cheese alternatives—they can affect the texture and flavor. For a lighter version, try low-fat cream cheese and reduced-fat sour cream, but expect a slight change in richness.
Is there a way to add more crunch to the casserole?
Adding a topping of seasoned breadcrumbs or crushed crackers before baking creates a delightful crunchy crust that contrasts beautifully with the creamy interior.
How spicy is this dish?
The Crab Casserole with Swiss and Cheddar Cheese Recipe carries a mild warmth from the mustard powder and Old Bay seasoning. If you prefer more spice, feel free to add a pinch of cayenne or some chopped jalapeño.
Can I prepare this casserole in advance for a party?
Absolutely! Prepare the casserole up to the baking step the day before, cover it tightly, and refrigerate. When ready to serve, simply bake until bubbly and golden. This saves time and lets you enjoy your guests.
Final Thoughts
This Crab Casserole with Swiss and Cheddar Cheese Recipe is one of those dishes you’ll want to keep coming back to for its creamy, cheesy indulgence packed with delicate crab flavor. It’s simple enough for weeknights but special enough to impress at gatherings. Give it a try, and you might just discover your new go-to comfort food that feels like homemade love in every bite.
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Crab Casserole with Swiss and Cheddar Cheese Recipe
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 4 to 4 servings
- Category: Casserole
- Method: Baking
- Cuisine: American
- Diet: Low Salt
Description
This creamy and flavorful Crab Casserole is a comforting baked dish combining imitation crab meat with a rich blend of cheeses, mayonnaise, sour cream, and aromatic seasonings. Perfectly baked to a bubbly, golden finish, it’s a simple yet impressive meal to serve over steamed rice or pasta for a satisfying family dinner.
Ingredients
Cheese and Dairy
- 1 cup Swiss cheese, shredded
- 4 ounces cream cheese, softened
- â…“ cup mayonnaise
- ¼ cup sour cream
- ½ cup cheddar cheese, shredded
Vegetables and Seasonings
- 1 tablespoon onion, minced
- 1 tablespoon green pepper, minced
- 3 green onions, chopped
- ½ teaspoon garlic powder
- ½ teaspoon mustard powder
- ½ teaspoon Old Bay seasoning
- 1 tablespoon chives, finely chopped
Seafood
- 14 ounces imitation crab meat, flake style (Trans-Ocean Crab Classic recommended)
Serving Suggestion
- Steamed rice or pasta, for serving
Instructions
- Preheat Oven: Preheat your oven to 350°F (175°C). Lightly grease a casserole dish to prevent sticking.
- Mix Base: In a large bowl, combine the softened cream cheese, mayonnaise, and sour cream. Mix thoroughly until the mixture is smooth and creamy.
- Add Flavorings: Stir in the minced onion, green pepper, chopped green onions, garlic powder, mustard powder, and Old Bay seasoning. Blend these ingredients well with the base mixture.
- Add Crab and Cheese: Gently fold in the flaked imitation crab meat, shredded Swiss cheese, shredded cheddar cheese, and finely chopped chives. Mix carefully to combine all ingredients evenly without breaking up the crab too much.
- Bake: Transfer the casserole mixture to the prepared baking dish. Bake uncovered in the preheated oven for 25 to 30 minutes, or until the casserole is bubbly and the top is slightly golden.
- Serve: Remove from oven and let cool slightly. Serve warm as a main dish over steamed rice or pasta of your choice.
Notes
- For best flavor, use high-quality imitation crab or real crab meat if available.
- The Old Bay seasoning adds a classic seafood flavor, but you can adjust the amount to taste.
- This casserole can be prepared ahead and refrigerated; just add 5 minutes to the bake time if baking cold.
- Use gluten-free mayo and sour cream to make this dish gluten-free.
- Leftovers can be stored in the refrigerator for up to 3 days and reheated in the oven.

