INGREDIENTS
1 1/4 lb
center-cut salmon fillet, skin and pin bones removed
2 tbsp
dijon mustard
1 tbsp
mayonnaise
1 tbsp
lemon juice
1/2 tsp
grated lemon zest
cayenne pepper
2
scallions, chopped
1 cup
plus 2 tablespoons panko (Japanese breadcrumbs)
Kosher salt and freshly ground black pepper
Kosher salt and freshly ground black pepper
2 tbsp
extra-virgin olive oil, plus more for brushing
4 brioche buns, split
Tartar sauce and arugula, for topping