Creamy Flavor-Packed Seafood Shells

Name: Creamy Flavor-Packed Seafood Shells
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Cuisine: American Italian
Ingredients: 20 jumbo pasta shells; 1 tablespoon olive oil; 2 garlic cloves, minced; 1/2 small onion, finely chopped; 1/2 pound cooked shrimp, chopped; 1/2 pound imitation crab, chopped; 1 cup ricotta cheese; 1 cup shredded mozzarella cheese, divided; 1/4 cup grated Parmesan cheese; 1 egg; 1/2 teaspoon Old Bay seasoning; Salt, to taste; Black pepper, to taste; 2 cups Alfredo sauce

Recipe by Sam Rivera · Updated October 2025

Seafood & Fish Italian

There's something magical about the first bite of Creamy Flavor-Packed Seafood Shells-rich, cheesy Alfredo sauce mingling with tender jumbo shells stuffed to the brim with sweet shrimp and delicate crab, all hugged by a blanket of melted mozzarella. Home cooks adore this dish for its effortless elegance, making it a weeknight hero that still feels special enough for holidays like Christmas Eve or Valentine's Day. What truly makes it irresistible is the creamy, savory filling tucked inside each shell, offering a luxurious twist on classic stuffed pasta that's hard to resist.

What Makes This Recipe Special

The marriage of Old Bay seasoning with Alfredo sauce creates a uniquely briny depth that balances the richness of the cheese and seafood.
Using a mix of ricotta and mozzarella in the filling ensures a velvety texture that's airy yet substantial-no gluey or dry results here.
Filling pasta shells just before baking preserves their structure, preventing them from becoming soggy in the sauce.
Baking the dish covered with foil first ensures the shells cook through while the cheese topping gets perfectly golden in the last 10 minutes.

⏱ 55 mins

American Italian

Servings 4

Ingredients

20 jumbopasta shells

1 tablespoonolive oil

2 garliccloves, minced

1/2 smallonion, finely chopped

1/2 poundcooked shrimp, chopped

1/2 poundimitation crab, chopped

1 cupricotta cheese

1 cupshredded mozzarella cheese, divided

1/4 cupgrated Parmesan cheese

1 egg

1/2 teaspoonOld Bay seasoning

Salt, to taste

Black pepper, to taste

2 cupsAlfredo sauce

Nutrition

450 caloriesCalories

Per serving · Values are estimates

Instructions

Preheat oven to 375°F. Lightly grease a 9x13-inch baking dish.

Heat olive oil in a skillet over medium heat. Sauté onion and garlic until translucent and fragrant.

Add chopped shrimp and imitation crab to the skillet and stir just until warmed through. Remove skillet from heat.

In a large mixing bowl, combine the seafood mixture with ricotta cheese, 1/2 cup of the mozzarella, Parmesan, egg, Old Bay seasoning, salt, and black pepper until thoroughly blended.

Carefully fill each cooked jumbo pasta shell with the prepared seafood cheese mixture. Arrange filled shells evenly in the prepared baking dish.

Pour Alfredo sauce evenly over the stuffed shells. Sprinkle remaining 1/2 cup mozzarella cheese over the top.

Cover the baking dish with foil and bake for 25 minutes. Remove foil and bake an additional 10 minutes until bubbling and lightly browned.

Essential Tips

Use room-temp ricotta

Let the ricotta sit out for 30 minutes before mixing to avoid a grainy texture. Cold ricotta straight from the fridge can make the filling dense and hard to pipe or stuff.

Undercook the shells slightly

Boil the jumbo shells for just 8-9 minutes (al dente) before stuffing. They'll finish cooking in the oven with minimal risk of bursting or becoming mushy.

Toast the garlic carefully

Cook the garlic on medium-low heat until pale gold, stirring constantly. Overheating turns it bitter-this dish relies on mellow, sweet garlic notes to complement the seafood.

Pat shrimp and crab dry

After chopping, blot the seafood with paper towels to remove excess moisture. Wet filling turns the shells gummy and prevents the cheese from clinging properly.

Sauce consistency matters

If your Alfredo sauce is too thick, thin it with 2-3 tablespoons of reserved pasta water. Too thin? Simmer it for 2-3 minutes to thicken before baking.

Smart Swaps & Variations

Spicy Kick Stir 1/2 teaspoon red pepper flakes or 1 teaspoon sriracha into the seafood mixture before stuffing the shells for a subtle heat that cuts through the richness.

Lighter Version Swap ricotta for low-fat cottage cheese and use reduced-fat mozzarella and Alfredo sauce to cut calories without sacrificing creaminess.

Fresh Crab Only Replace imitation crab with 1/2 pound lump crabmeat for a more refined flavor and texture-just be sure to pick through it for shells.

Add Greens Fold 1/2 cup finely chopped spinach or arugula into the filling for a pop of color and a mild bitter note to balance the dish.

What to Serve With This

Garlic bread and a bright arugula salad tossed with lemon vinaigrette to cut through the richness.
A crisp Sauvignon Blanc or Pinot Grigio to complement the seafood and creamy sauce.
Steamed asparagus or roasted broccolini for a simple yet elegant side.
A bowl of marinara on the side for dipping-great for kids or anyone craving a classic touch.

Storage & Reheating

Storage

Store leftovers in an airtight container in the refrigerator for up to 3 days. The dish can also be frozen for up to 2 months; thaw overnight in the fridge before reheating.

Reheating

Reheat covered in the oven at 350°F for 15-20 minutes until heated through. Microwaving works in a pinch, but it can make the shells rubbery-cover with a damp paper towel and heat in 30-second intervals.

Expert Chef Tips

Toast your Parmesan lightly in a dry skillet for 1-2 minutes before grating to deepen its nutty flavor and enhance the dish's savoriness.
For extra crunch on top, sprinkle panko breadcrumbs mixed with melted butter over the mozzarella before baking the last 10 minutes.
Use jumbo shells with slightly irregular shapes-they're easier to stuff and often hold more filling than perfectly uniform ones.

Equipment You’ll Need

9x13-inch baking dish (glass or ceramic preferred for even heat distribution)
Medium skillet for sautéing seafood and aromatics
Piping bag with a large round tip or small cookie scoop for stuffing shells
Large pot for boiling pasta shells

Nutritional Benefits

High in protein (25g per serving) from shrimp, crab, and cheese, making it a satisfying and balanced meal.
Rich in calcium (30% DV) and phosphorus from ricotta and mozzarella, supporting bone health.
Moderate in saturated fat due to cheese, but portion control and lighter cheese swaps can reduce this.
Contains iodine from seafood, which supports thyroid function and metabolism.

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Frequently Asked Questions

Can I use fresh pasta shells instead of dried?

Yes, but reduce the boiling time to 5-6 minutes since fresh pasta cooks faster. Also, handle fresh shells gently to avoid tearing-they're more delicate than dried.

What's the best way to stuff the shells without breaking them?

Use a piping bag fitted with a large round tip or a small cookie scoop to fill the shells evenly. Gently press the filling into the shell without overpacking to prevent cracks.

Can I make this ahead of time?

Absolutely. Assemble the dish up to the baking stage, cover tightly, and refrigerate for up to 24 hours. Add 5-10 minutes to the baking time if starting from cold.

How do I fix shells that burst during baking?

Bursting usually happens from overfilling or undercooking. Next time, use a smaller scoop (about 1.5 tablespoons of filling per shell) and ensure they're boiled al dente before stuffing.

Can I substitute other seafood?

Lobster or scallops work beautifully-just chop them finely and reduce cooking time to avoid toughness. Avoid delicate fish like cod, as it can overcook and flake apart.

Why does my Alfredo sauce separate?

This happens if the sauce is overheated or stirred too vigorously after adding cheese. Keep the heat low and stir constantly when combining the sauce with the cheese to maintain a smooth emulsion.

Can I use gluten-free pasta shells?

Yes, but check the package for cooking times-gluten-free pasta often cooks faster and can be more delicate. Handle with care to avoid breaking.

What's the best way to chop imitation crab for even texture?

Slice it into thin strips lengthwise first, then chop crosswise into small, uniform pieces. This prevents stringy or uneven bits in the filling.