This fast and fun weeknight meal reveals an unexpected use for peanut butter, transforming it into a savory five-ingredient sauce. The pantry favorite is combined with tangy lemon juice, fragrant ginger and toasted sesame oil to create a rich, supernutty glaze that pairs well with fatty salmon. Here the salmon is roasted on a rack of green beans, but a bed of broccoli florets would be an excellent alternative. The sweet-salty glaze can be made a day ahead and brought to room temperature…