
Seafood Mac and Cheese Bake is the ultimate comfort dish for gatherings or when you want to treat yourself to something indulgent and special. Elbow macaroni gets enveloped in a rich, creamy cheese sauce made with Velveeta and Colby Jack cheeses, heavy cream, and a savory seasoning blend. The addition of shrimp, lump crab meat, and crawfish tails brings bold seafood flavors to every bite. Once layered and baked until bubbly and golden, this casserole delivers warm, creamy satisfaction with a delightful seafood twist. It’s perfect for feeding a crowd or enjoying leftovers that reheat beautifully.
The first time I made this was for a family reunion and it disappeared so fast I had to make a second batch. Now it’s a requested weekend treat that never disappoints.
Ingredients
- Macaroni noodles: Used for a tender bite that holds onto cheesy sauce well, choose a sturdy brand for best texture
- Velveeta cheese: Provides that velvety melt and classic creamy flavor, but you can swap for another melting cheese if preferred
- Colby Jack cheese: Shreds easily adding both flavor and gooey stretch, freshly shredded is ideal for the best melt
- Heavy whipping cream: Makes the sauce silky and rich, fresh cream gives the smoothest consistency
- Unsalted butter: Lets you control salt levels and adds richness, pick a good quality brand for flavor
- Cream of chicken soup: Builds body and savory notes in the sauce, low sodium versions work well to keep salt balanced
- Jumbo shrimp: Peeled and deveined are easiest to prep, wild-caught offers a more robust flavor
- Lump crab meat: Adds sweet richness, fresh or canned works best but ensure it is well drained to avoid watery bake
- Crawfish tails: Bring authentic Southern flavor, thawed and rinsed to keep creaminess intact
- Seafood seasoning: Like Kinders amps up the seafood flavor throughout the dish, taste and adjust salt carefully
- Cajun seasoning: Adds heat and a Southern kick, use your favorite blend or make your own for depth
- Garlic powder: Rounds out the savory notes, fresh powder makes a noticeable aroma difference
- An accent flavor enhancer: Is optional but adds umami complexity, use sparingly and taste as you go
- Black pepper: Adds warmth to cut through richness, fresh ground offers the best punch
- Chopped parsley: Serves as a fresh colorful garnish, pick bright greens for a pretty finish
Instructions
- Make the Cheese Sauce:
- In a saucepan over low heat combine heavy whipping cream cream of chicken soup and cubed Velveeta cheese. Stir continuously for about ten minutes until the cheese melts completely and the sauce becomes smooth and silky. This careful melting process ensures a creamy base without lumps
- Season the Sauce:
- Add seafood seasoning Cajun spice garlic powder accent flavor enhancer and black pepper to the sauce. Stir well so all spices are evenly distributed. This step layers in deep bold flavors that define the dish
- Boil the Pasta:
- Cook macaroni noodles in plenty of salted boiling water according to package directions until they are just al dente. Drain thoroughly and immediately transfer to a large buttered baking dish so the noodles do not stick and will absorb the sauce better in the oven
- Sauté the Crawfish:
- In a skillet melt the butter over medium heat. Add crawfish tails and a pinch of seafood seasoning. Cook them for two to three minutes just to warm and lightly season. The gentle cooking keeps them tender. Remove and set aside on a plate for layering
- Warm the Crab Meat:
- Add a small bit more butter to the same skillet. Gently warm the lump crab meat for about one minute. Season very lightly to highlight its natural sweetness. Remove from heat and keep ready for assembly
- Cook the Shrimp:
- Season shrimp with the seafood blend. Sauté in a hot skillet with a pat of butter or alternatively air fry until shrimp turn opaque and are just cooked through. This step locks in juiciness and prevents overcooking
- Assemble the Casserole:
- Pour half of the cheese sauce over the macaroni in the baking dish. Add a handful of the shredded Colby Jack cheese and stir gently to coat every noodle in creamy sauce
- Add Seafood Layers:
- Evenly arrange the sautéed crawfish crab meat and cooked shrimp over the macaroni. Try to space them out for even baking and even flavor distribution
- Top and Finish:
- Pour the remaining cheese sauce evenly over the seafood. Sprinkle the rest of the Colby Jack on top. Garnish with a few extra crawfish tails and chopped parsley for a colorful appealing presentation
- Bake:
- Bake the assembled dish in a preheated oven at three hundred fifty degrees Fahrenheit for ten to fifteen minutes or until the cheese on top is bubbly and golden around the edges. Serve the bake hot for best flavor and texture

My kids always try to snag the piece with the crispiest cheese crust which makes me smile. Whenever I make this it reminds me of those joyful summers on the coast hunting down the best seafood mac and cheese at local diners.
Storage Tips
Allow the casserole to cool completely before covering and refrigerating. This prevents sogginess and preserves texture. Leftovers will keep safely for up to three days in the fridge. Reheat covered in the oven with foil to maintain creamy moistness or zap single servings in the microwave for a quick fix
Ingredient Substitutions
Any seafood mix can work here depending on what you have on hand. Scallops or firm white fish can be swapped in for shrimp or crab. Try Monterrey Jack or sharp cheddar in place of Colby Jack for a different flavor profile. For a lighter sauce, replace heavy cream with half and half though it will be slightly less rich
Serving Suggestions
Pair this indulgent bake with a crisp green salad or simply steamed green beans to add freshness and crunch. A squeeze of fresh lemon juice brightens the rich flavors beautifully. For a Southern coastal vibe, serve alongside warm cornbread and offer hot sauce for those who like a little extra kick

Serve the bake hot for maximum creaminess. Leftovers reheat well for an easy next day meal.
Common Recipe Questions
- → What seafood works best in this bake?
Shrimp, lump crab meat, and crawfish tails are ideal, but lobster or firm white fish can be used as substitutes.
- → Can different cheeses be used?
Yes, Velveeta and Colby Jack melt smoothly, but sharp cheddar or Monterey Jack are good options for varied flavor.
- → How to prevent macaroni from becoming mushy?
Cook pasta until just al dente, drain well, and avoid overbaking to maintain a firm texture.
- → Can this dish be prepared ahead of time?
Absolutely, assemble and refrigerate before baking. Add extra baking time if starting cold.
- → Which seasonings enhance the seafood flavor?
Cajun seasoning, seafood blend, and garlic powder highlight the savory and sweet notes of the seafood.
- → Is it possible to make it spicy?
Increase Cajun seasoning or add hot sauce to the cheese sauce to suit your preferred spice level.