1 1/2teaspoonsOld Bay or similar seafood seasoning
2tablespoonsfreshly squeezed lemon juice
1/3cupchopped fresh parsleyplus additional for serving
Clean the mussels: Put the mussels in a large bowl and cover with cool water. Add flour and with your hands, mix to combine (don’t worry if there are still a few lumps of flour). Let soak for 30 minutes—during this time, the mussels will disgorge any sand. Drain. If the mussels have a "beard,” remove from each with your fingers and scrub away any dirt on the outside of the mussels under running water. Discard any mussels that are not tightly shut. Make sure you have the rest of your ingredients 100% prepped and ready to go.
Bring a large pot of well-salted water to boil and cook pasta to al dente according to package directions. Reserve 1 cup of pasta water (don’t forget!), then drain the noodles*.
In a wide, deep skillet with a tight-fitting lid, heat 2 tablespoons of the butter and the oil over medium heat. When the butter foams, add the scallops and sear on the first side for 1 1/2 minutes without disturbing, then flip and move them to one side of the pan. Add the shrimp to the now open side of the pan. Sprinkle everything with salt. Continue cooking, flipping the shrimp after about a minute or so, until the shrimp are no longer translucent and the scallops are cooked through, about 2 minutes more. Remove to a plate and set aside.
Reduce the heat to medium. Add the remaining 1 tablespoon butter and shallot. Sauté for 3 minutes until the shallot is beginning to soften and brown, then add the garlic and red pepper flakes. Let cook, stirring constantly, until the garlic is super fragrant, about 1 minute.
Add the wine, oregano, basil, and Old Bay. Bring to a boil, then add the mussels. Cover the skillet, reduce the heat to medium-low, and let steam until the mussels open, about 5 minutes. Shake the skillet once or twice throughout to move the mussels around. Uncover the skillet and discard any mussels that did not open.
Immediately place the pasta in the skillet with the mussels. Add the lemon juice, scallops, shrimp, and parsley. With tongs, toss and stir until everything is evenly combined, adding some of the reserved pasta water as needed. Enjoy immediately with additional fresh parsley as desired.
*Ideally, time the recipe so that as soon as the noodles are finished cooking to al dente, you’re ready to add them directly to the skillet with the rest of the cooked seafood in step 6 (I use tongs and put them straight from the pasta water into the skillet). Timing-wise I find that if I add the noodles to the boiling about a minute or two after I start searing the scallops, the timing is perfect.
TO STORE: Seafood pasta is best enjoyed immediately after preparation, but leftovers can be stored for up to 3 days in an airtight container in the refrigerator.
TO REHEAT: Reheat gently on stove with a splash of water or broth to keep the pasta from drying out.
TO FREEZE: I do not recommend freezing seafood pasta, as the seafood will not maintain its texture.