🦞 Seafood Casseroles: Bubbly, Buttery & Oven-Ready

ByKarl S

Comfort food meets coastal flavor in these crowd-pleasing seafood casseroles. Creamy, cheesy, or brothy — they bake up beautifully with shrimp, crab, scallops, or salmon. Most are one-dish wonders, easy to prep ahead and even better the next day.

🦀 Crab Mac & Cheese Casserole

Ultra-creamy and loaded with sweet lump crab.

Ingredients:

  • Elbow macaroni
  • Butter, flour, milk
  • Cheddar + Gruyère cheese
  • Lump crab meat
  • Old Bay seasoning
  • Breadcrumbs (optional topping)

Instructions:

  1. Cook pasta and set aside.
  2. Make a cheese sauce with butter, flour, milk, and cheeses.
  3. Fold in crab and seasoning.
  4. Combine with pasta in baking dish.
  5. Top with breadcrumbs and bake at 375°F for 25–30 min.

👉 Crab Mac & Cheese Casserole Recipe

🍤 Shrimp & Rice Casserole

Savory, creamy, and southern-style comfort.

Ingredients:

  • Cooked rice
  • Shrimp (peeled & deveined)
  • Cream of mushroom or celery soup
  • Onion, bell pepper
  • Cheddar or Monterey Jack
  • Cajun seasoning

Instructions:

  1. Sauté onion and peppers.
  2. Stir in shrimp, soup, rice, and cheese.
  3. Season and transfer to casserole dish.
  4. Bake at 350°F for 25–30 minutes until bubbly.

👉 Shrimp & Rice Casserole Recipe

🧀 Cheesy Tuna Noodle Casserole

A retro classic made better with bold flavor.

Ingredients:

  • Egg noodles
  • Canned tuna (in oil or water)
  • Cream of mushroom soup
  • Peas, onions
  • Shredded cheddar
  • Breadcrumbs or potato chips

Instructions:

  1. Cook noodles and set aside.
  2. Mix tuna, soup, veggies, and cheese.
  3. Stir in noodles and spread in dish.
  4. Top with crushed chips or crumbs.
  5. Bake at 375°F for 25 minutes.

👉 Cheesy Tuna Noodle Casserole Recipe

🐟 Baked Salmon Casserole

Rich and protein-packed with lemony, herbed flavor.

Ingredients:

  • Flaked cooked salmon
  • Pasta or rice
  • Sour cream or Greek yogurt
  • Lemon juice, dill
  • Parmesan
  • Spinach or kale (optional)

Instructions:

  1. Combine salmon, base, dairy, lemon, herbs, and greens.
  2. Mix with cooked pasta or rice.
  3. Spread in dish, sprinkle with Parmesan.
  4. Bake at 350°F for 30 minutes.

👉 Baked Salmon Casserole Recipe

🦐 Shrimp Alfredo Bake

Creamy, cheesy, and perfectly indulgent.

Ingredients:

  • Fettuccine or penne
  • Shrimp
  • Jarred or homemade Alfredo sauce
  • Mozzarella + Parmesan
  • Garlic, Italian seasoning

Instructions:

  1. Cook pasta and shrimp.
  2. Toss with sauce and cheese.
  3. Transfer to dish, top with extra cheese.
  4. Bake at 375°F for 20–25 min.

👉 Shrimp Alfredo Bake Recipe

🐚 Seafood Gratin (French-Style)

Elegant and rich with a golden breadcrumb crust.

Ingredients:

  • Mixed seafood (scallops, shrimp, white fish)
  • Shallots, garlic, white wine
  • Cream
  • Gruyère or Swiss cheese
  • Panko breadcrumbs, butter

Instructions:

  1. Cook seafood lightly and set aside.
  2. Make cream sauce with shallots, wine, and cheese.
  3. Combine and pour into gratin dish.
  4. Top with buttered panko and bake at 400°F until browned.

👉 Complete Seafood Gratin Recipe

🦀 Crab & Spinach Casserole

Low-carb and veggie-packed with big flavor.

Ingredients:

  • Lump crab meat
  • Cooked spinach (squeezed dry)
  • Cream cheese
  • Eggs
  • Garlic, onion, herbs
  • Mozzarella

Instructions:

  1. Sauté garlic and onion, then mix all ingredients.
  2. Spread in dish and top with cheese.
  3. Bake at 350°F for 25–30 minutes until set.

👉 Complete Crab & Spinach Casserole Recipe

🧄 Garlic Seafood Pasta Bake

Cheesy and garlic-heavy in the best way.

Ingredients:

  • Penne or ziti
  • Shrimp and scallops
  • Roasted garlic Alfredo or white sauce
  • Mozzarella + Parmesan
  • Red pepper flakes

Instructions:

  1. Cook pasta and seafood separately.
  2. Mix with sauce and cheese.
  3. Bake at 375°F for 30 minutes until bubbly.

👉 Garlic Seafood Pasta Bake Recipe

🌽 Seafood Cornbread Casserole

Savory and sweet with a golden crust.

Ingredients:

  • Shrimp or crab
  • Cornbread mix
  • Creamed corn
  • Jalapeños, onions
  • Cheddar cheese
  • Cajun seasoning

Instructions:

  1. Mix cornbread batter with veggies and seasoning.
  2. Fold in seafood and cheese.
  3. Bake in greased pan at 375°F for 25–30 minutes.

👉 Seafood Cornbread Casserole Recipe

🧀🦀 Cheesy Crab Bake

Cheesy Crab Bake is a warm, comforting seafood casserole loaded with sweet lump crab, melty cheese, and a creamy, seasoned base with hints of lemon and spice.

It’s perfect as a main or a party dip — baked until golden and served hot with crusty bread, crackers, or just a big spoon.

👉 Cheesy Crab Bake Recipe

🧾 Final Thoughts: Cozy, Creamy, Coastal

Seafood casseroles bring the rich comfort of baked pasta and creamy fillings to the bright, briny flavors of the sea. From weeknight wins to holiday hits, they’re endlessly flexible and freezer-friendly.

Pro tip: Keep a stash of frozen seafood on hand and a box of pasta or cornbread mix — you’re halfway to dinner.

🦐 More Coastal Seafood Recipes

From cozy casseroles to zesty grilled fish and elegant seafood pastas, this collection of Seafood Recipes covers every ocean-inspired craving — whether you’re planning a dinner party or a quick weeknight win.

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