Miso salmon is an easy meal for any night of the week but it gets taken to a whole other level here with the additions of grapefruit and honey. Combining the zest and juice from the grapefruit with honey, miso and a bit of ginger gives the fish a sticky-tangy finish when broiled. The sushi rice is mixed with a humble pat of butter and some sliced scallions, making it a comforting counterpart to this simple fish for an elegant weeknight dinner.