Creamy Seafood Mac and Cheese

Featured in Delicious Dinner Inspirations.

Rich mac and cheese featuring cajun shrimp, crab meat, and three cheeses. Takes 1 hour 45 minutes including cooling time. Perfect special occasion dinner.
Casey
Updated on Fri, 14 Feb 2025 13:30:28 GMT
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Standing in my kitchen one Sunday afternoon, surrounded by mountains of cheese and the sweet aroma of seafood, I discovered that transforming classic mac and cheese into something extraordinary wasn't just possible - it was absolutely necessary. This Cajun shrimp and crab version came to life during a holiday gathering when regular mac and cheese just wouldn't do, and watching my traditionally picky family members fight over second helpings told me this wasn't just dinner, it was something special.

Essential Elements

  • Fresh shrimp needs to be large enough to stand up to the pasta.
  • Crab meat can be fresh or imitation, depending on your budget and preference.
  • Sharp cheddar brings that classic tang we all love.
  • Colby and Monterey Jack add incredible meltability.
  • Whole milk and evaporated milk create that perfect creamy base.
  • Fresh garlic and Cajun seasoning build layers of flavor.
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Comfort Food Creation

Base Building:
Start with perfectly cooked elbow macaroni, keeping it just past al dente since it'll continue cooking in the oven.
Seafood Symphony:
Season those shrimp with plenty of Cajun spice, letting them pick up golden color in the pan.
Sauce Development:
Blend four cheeses into warm milk until everything becomes silky smooth.
Layer Assembly:
Combine pasta, seafood, and sauce carefully, making sure every bite gets its fair share.
Final Touch:
Top with extra cheese and seasonings before baking until golden and bubbly.

Creamy Texture Magic

The secret to that incredible creaminess lies in the combination of regular and evaporated milk, something my grandmother taught me years ago when I was just learning to cook. Through countless pans of this dish, I've discovered that letting the milk mixtures warm slowly while adding cheese gradually creates that silky smooth sauce that makes everyone scrape their plates clean.

Perfect Seafood Balance

Watching the shrimp turn pink while bathed in Cajun seasoning fills the kitchen with an aroma that makes waiting almost impossible. Some nights I'll make extra shrimp just because I know people will sneak pieces while I'm assembling everything else. The key is having enough seafood scattered throughout so every forkful brings that perfect combination of pasta, cheese, and tender shrimp or crab.

Family Style Serving

Nothing brings people to the table faster than pulling this bubbling masterpiece from the oven, its golden top hiding treasures of seafood below. I've learned to make a bigger batch than I think I'll need because watching people go back for seconds (and thirds) has become part of the tradition.

Making It Your Own

Some nights I'll add extra cayenne when I'm cooking for spice lovers, or fold in sautéed bell peppers and onions for added depth. My sister swears by adding extra garlic, while my brother-in-law loves his with a panko topping for extra crunch.

Keeping the Magic

Store any leftovers (if you're lucky enough to have any) in a covered dish in the fridge, then reheat slowly with a splash of milk to bring back that creamy texture. Though honestly, I've seen family members eat it cold straight from the fridge, claiming it's just as good that way.

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Chef's Wisdom

Let your ingredients come to room temperature for the smoothest sauce.

Trust your taste buds with the seasonings - measurements are just guidelines.

Create a foil tent if the top browns too quickly.

Every time I make this dish, whether for a holiday gathering or just because someone needs comforting, I'm reminded that the best recipes aren't just about following instructions - they're about creating moments where food brings people together, turning ordinary evenings into celebrations worth remembering.

Frequently Asked Questions

→ Can I use imitation crab?
Yes, you can use 2 1/2 cups imitation crab instead of fresh crab legs.
→ How spicy is this dish?
Spice level is adjustable - start with less cajun seasoning and cayenne, then add to taste.
→ Can I make it ahead?
Best served fresh, but can be reheated. Add a splash of milk when reheating.
→ What can I serve with it?
A light green salad balances the richness of this hearty dish.
→ Can I freeze this?
Not recommended as dairy-based sauces can separate when frozen and thawed.

Cajun Shrimp and Crab Mac & Cheese

Ultra creamy mac and cheese loaded with cajun-spiced shrimp, crab meat, and three types of cheese - pure comfort food heaven.

Prep Time
20 Minutes
Cook Time
55 Minutes
Total Time
75 Minutes
By: Casey

Category: Dinner Delights

Difficulty: Intermediate

Cuisine: Cajun

Yield: 8 Servings (1 9x13 pan)

Dietary: ~

Ingredients

→ Cajun Shrimp

01 2 pounds shrimp, peeled and deveined
02 2 tablespoons olive oil
03 1-2 Tbsp cajun seasoning
04 Pinch of salt
05 Pinch of freshly ground black pepper

→ Mac and Cheese Base

06 3 cups elbow macaroni, uncooked
07 2 lbs fresh crab legs, cooked (or 2 1/2 cups imitation crab meat)
08 1/4 cup fresh or dried basil, plus more for topping
09 1 cup whole milk
10 2 - 2 2/3 cups evaporated milk
11 1/2 - 1 tsp paprika
12 1/4 - 1/2 tsp cayenne pepper
13 1/2 tsp salt
14 1/2 tsp freshly ground black pepper
15 2 large eggs, beaten

→ Cheese Mixture

16 4 cups sharp cheddar cheese, grated
17 2 cups mild cheddar cheese, grated
18 2 cups colby & monterey jack cheese, grated
19 1/2 cup parmesan cheese, grated
20 Cajun seasoning for topping

Instructions

Step 01

Season shrimp with olive oil, cajun seasoning, salt and pepper. Cook in hot skillet for 4-6 minutes until pink. Set aside.

Step 02

Cook macaroni until al dente in salted water. Drain and mix with cajun shrimp, crab chunks and basil.

Step 03

Whisk together milk, evaporated milk, seasonings, and eggs. Reserve some cheese for topping, mix remaining cheese into milk mixture.

Step 04

Combine cheese mixture with pasta mixture. Pour into buttered 9x13-inch baking dish. Top with reserved cheese and seasonings.

Step 05

Bake at 350°F for 45-55 minutes until golden, covering with foil after 35-40 minutes. Let rest 25-30 minutes before serving.

Notes

  1. Adjust spices to your taste preference
  2. Can use more evaporated milk for creamier result
  3. Must rest before serving to set properly

Tools You'll Need

  • 9x13-inch baking dish
  • Large skillet
  • Large pot for pasta
  • Large mixing bowls

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains shellfish (shrimp, crab)
  • Contains dairy (milk, cheese)
  • Contains eggs
  • Contains gluten (pasta)

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 750
  • Total Fat: 38 g
  • Total Carbohydrate: 45 g
  • Protein: 52 g