First, cook the pasta. Bring a large pot of salted water to a boil.
Cook your pasta according to the packet instructions until al dente.
Next, prep the mussels! Rinse under cold, fresh water and scrub the mussels. Remove any beards and discard any that are open and don’t close when tapped.
In a large skillet or wide sauté pan, heat extra-virgin olive oil and butter over medium heat.
Once the butter foams, add minced garlic and shallots.
Cook for about 2 minutes, just until fragrant.
Pour in the white wine, chicken broth, lemon juice, chopped parsley, red pepper flakes, black pepper, and a pinch of salt.
Stir, then add the mussels. Cover and simmer over medium-high heat for 5 minutes, or until the mussel shells open. Discard any that don’t.
Add the drained pasta directly into the mussel broth.
Toss to coat, then cover and simmer for 3–5 minutes over low heat. Finish with grated parmesan and chopped parsley.