For a weeknight salmon that’s impressive enough for entertaining, look no further. Salty miso paste and sweet maple syrup are the backbone of this simple, flavor-packed marinade, which is about as involved as this uncomplicated recipe gets. Here, the fish soaks up the sauce as the oven gets hot, and the snappy green beans roast in the same amount of time as the fillets. Start some rice when you walk in the door and you’ll have dinner on the table in under a half hour.