
Jumbo pasta shells stuffed with sweet crab meat, tender shrimp, and creamy ricotta, baked under a rich homemade Alfredo sauce for the ultimate seafood comfort dinner.

If you love the combination of sweet crab meat, tender shrimp, and creamy cheese, this recipe is about to become a regular in your dinner rotation. Shrimp and Crab Stuffed Shells with Alfredo Sauce takes everything wonderful about classic stuffed shells and gives it a luxurious seafood upgrade. Jumbo pasta shells are packed with a rich ricotta and seafood filling, then smothered in a silky homemade Alfredo sauce and baked until bubbly and golden. It is the kind of dish that looks like it came from a special occasion menu, but is actually simple enough for a weeknight when you are craving something a little extra.
Before we get cooking, the right tools and ingredients make a real difference here. A sturdy 9x13 baking dish, a wide skillet for quickly searing the shrimp, and good quality lump crab meat will take this recipe from good to unforgettable. These are the products that genuinely help this recipe shine:
The magic of this dish comes down to a few key details. First, cooking the shrimp separately before mixing it into the filling means it stays juicy instead of turning rubbery in the oven. Second, using both ricotta and mozzarella in the filling keeps every bite creamy without being heavy. And finally, a from-scratch Alfredo sauce, rather than a jarred version, gives you full control over the flavor and thickness.
Chef's Tip: Undercook your jumbo pasta shells by a minute or two compared to the package directions. They will continue to soften as they bake in the Alfredo sauce, so slightly firm shells straight out of the pot are exactly what you want.
One of the most common questions with a recipe like this is how to cook shrimp so it stays tender inside the filling. The trick is a quick, hot sear. Chop your shrimp into small bite sized pieces first, then cook them in butter and olive oil over medium heat for just 2 to 3 minutes, until they turn pink and opaque. Pull them off the heat right away. Shrimp continues to cook a bit from residual heat, and it will also bake again once stuffed into the shells, so you want to slightly undercook it at this stage to avoid a chewy texture later.
Once your shrimp has cooled slightly, fold it together with the crab meat, ricotta, a portion of the mozzarella and parmesan, an egg to help everything bind, and plenty of fresh parsley and garlic. Mix gently. You want to keep those beautiful lumps of crab meat mostly intact rather than mashing everything into a paste. This is what gives every bite of the stuffed pasta shells its texture and character.
A proper Alfredo sauce is simple, but it deserves attention. Melted butter, garlic, heavy cream, and freshly grated parmesan simmered gently until smooth and glossy is really all it takes. A touch of lemon juice at the end brightens the richness, and a pinch of red pepper flakes adds a subtle warmth that plays beautifully against the sweetness of the crab.
Ready to make it? Here is the full step-by-step recipe:

Jumbo pasta shells stuffed with sweet crab meat, tender shrimp, and creamy ricotta, baked under a rich homemade Alfredo sauce for the ultimate seafood comfort dinner.
Bring a large pot of salted water to a boil. Cook the jumbo pasta shells 1 to 2 minutes less than package directions for al dente, since they will finish cooking in the oven. Drain and lay flat on a sheet pan to cool.
Preheat the oven to 375 degrees F (190 degrees C). Lightly grease a 9x13 inch baking dish.
Heat the olive oil and 1 tablespoon of butter in a skillet over medium heat. Add the chopped shrimp and half of the minced garlic, and cook for 2 to 3 minutes until the shrimp turns pink and opaque. Remove from heat and let cool slightly.
In a large bowl, combine the cooked shrimp, crab meat, ricotta cheese, 1 cup of mozzarella, half of the parmesan, the beaten egg, 2 tablespoons of parsley, salt, and black pepper. Mix gently until just combined, being careful not to break up the crab meat too much.
Make the Alfredo sauce: in a saucepan over medium heat, melt the remaining 3 tablespoons of butter. Add the remaining garlic and cook for 30 seconds until fragrant.
Pour in the heavy cream and bring to a gentle simmer, whisking often. If you prefer a thicker sauce, whisk in the tablespoon of flour at this stage. Stir in the remaining parmesan cheese until melted and smooth, then season with the lemon juice, red pepper flakes, and a pinch of salt.
Spread a thin layer of Alfredo sauce across the bottom of the prepared baking dish.
Stuff each pasta shell generously with the shrimp and crab filling, and arrange them open side up in the baking dish.
Pour the remaining Alfredo sauce evenly over the stuffed shells, then sprinkle with the remaining mozzarella and a little extra parmesan.
Cover the dish loosely with foil and bake for 20 minutes. Remove the foil and bake for another 10 to 15 minutes, until the sauce is bubbling and the cheese is golden.
Let the dish rest for 5 minutes, then garnish with the remaining fresh parsley before serving.
This dish is rich and satisfying enough to be the star of the table, so keep your sides simple. A crisp green salad with a light vinaigrette, some garlicky roasted broccoli, or warm crusty bread to mop up extra Alfredo sauce are all perfect companions.
If you have leftovers, they store beautifully. Keep them in an airtight container in the fridge for up to three days, and reheat gently in the oven so the sauce stays creamy instead of separating. This recipe also freezes reasonably well if assembled but unbaked, making it a great make-ahead option for busy weeks or when you want to impress guests without a lot of last minute effort.
Chef's Tip: If your Alfredo sauce ever looks a little too thick after reheating, whisk in a splash of warm cream or milk right before serving to bring it back to that silky consistency.
However you serve it, this shrimp and crab stuffed shells recipe is guaranteed to feel like a special occasion, even on an ordinary Tuesday night.