This recipe for Seafood Stuffed Shells is the ultimate pasta dinner! Cooked jumbo pasta shells are stuffed with a seafood filling made of shrimp, scallops, and lump crab (or any other seafood you love) and baked in a creamy, white Old bay béchamel sauce until golden brown and bubbling. This baked seafood pasta is decadent, comforting and a terrific meal for special occasions, but easy enough for a weekday dinner or date night at home.