Creamy Cajun Lobster & Shrimp Mac and Cheese

This mac and cheese takes comfort food to a whole new level. Tender lobster and juicy Cajun-spiced shrimp get folded into a rich three-cheese sauce with pasta, then topped with a golden garlic breadcrumb crust. It’s decadent, satisfying, and impressive enough for a special occasion while still being approachable enough to make at home.

Why You’ll Love This Recipe

• Two seafoods, one indulgent bake. Lobster and Cajun shrimp both bring rich flavor to every bite.
• A three-cheese sauce. Cheddar, Gruyère or Pepper Jack, and mozzarella combine for maximum creaminess.
• That garlic breadcrumb topping. A crunchy, buttery finish that contrasts beautifully with the creamy pasta underneath.
• Feeds a crowd. Serves 8, making it perfect for holidays, potlucks, or family gatherings.

Ingredients

For the Pasta and Seafood

• 1 lb elbow macaroni or cavatappi pasta
• 2 lobster tails, cooked and chopped
• ¾ lb medium shrimp, peeled and deveined
• 1 tbsp Cajun or Creole seasoning
• 2 tbsp butter

For the Three Cheese Sauce and Topping

• 4 tbsp butter
• ¼ cup all-purpose flour
• 3 cups whole milk, warmed
• 1 cup heavy cream
• 2 cups sharp cheddar cheese, shredded
• 1 cup Gruyère or Pepper Jack cheese, shredded
• 1 cup mozzarella cheese, shredded
• ½ cup panko breadcrumbs
• 1 tbsp melted garlic butter

How to Make Creamy Cajun Lobster & Shrimp Mac and Cheese

1. Cook the pasta. Cook the macaroni in salted boiling water according to the package directions until al dente. Drain and set aside.

2. Season the shrimp. Toss the shrimp with the Cajun or Creole seasoning until evenly coated.

3. Sear the shrimp. Melt 2 tbsp butter in a skillet over medium heat. Cook the Cajun shrimp for 2 to 3 minutes per side, until pink and tender. Chop the shrimp coarsely and set aside.

4. Start the cheese sauce. Melt 4 tbsp butter in a large pot over medium heat. Whisk in the flour and cook for 1 to 2 minutes.

5. Make it creamy. Gradually whisk in the warm milk and heavy cream until smooth. Simmer for 3 to 5 minutes, until slightly thickened.

6. Add the cheese. Remove the pot from the heat. Stir in the cheddar, Gruyère or Pepper Jack, and mozzarella until completely melted and smooth.

7. Combine the seafood mac and cheese. Fold the cooked pasta, Cajun shrimp, and lobster meat into the creamy cheese sauce until everything is evenly coated.

8. Add the garlic breadcrumb topping. Transfer the lobster and shrimp mac and cheese to a greased 9×13-inch baking dish. Toss the panko breadcrumbs with the melted garlic butter, then sprinkle evenly over the top.

9. Bake until golden. Bake at 375°F for 20 to 25 minutes, until the seafood mac and cheese is bubbling around the edges and the topping is golden.

10. Rest and serve. Let the mac and cheese rest for 5 minutes before serving.

Tips for the Best Cajun Lobster & Shrimp Mac and Cheese

• Warm the milk before adding it. This helps the sauce come together smoothly without cooling down the roux too quickly.
• Remove the pot from heat before adding the cheese. Adding cheese off direct heat helps prevent it from becoming grainy or separating.
• Chop the shrimp coarsely. This helps distribute the shrimp evenly throughout the pasta in every bite.
• Don’t skip the breadcrumb topping. The crunchy garlic butter crust is what takes this dish over the top.

What to Serve with Cajun Lobster & Shrimp Mac and Cheese

A simple green salad with a light vinaigrette pairs nicely, cutting through the richness of the dish. This mac and cheese is hearty enough to be the star of the meal on its own.

Frequently Asked Questions