Ready in just 15 minutes, this fast dinner combines silky salmon with a vibrant green medley of asparagus and peas. While the fish roasts, the vegetables and sauce come together in one pan on the stovetop. Thinly slicing the asparagus is the trick to maintaining a crisp texture that complements the tender salmon, while bright lemon juice and zingy capers balance the nutty brown butter sauce. Parsley is used here to finish, but dill or tarragon would also be lovely. Leftover vegetables make a…