Step 1

Preheat the oven to 400˚F with one rack positioned in the top third of your oven. Line a rimmed baking sheet with parchment paper and set it aside.

Step 2

In a small bowl, combine the sugar, mustard, lemon juice, oil, salt, and pepper. Mix well to combine.

Step 3

Lay the fillets on the prepared baking sheet skin-side-down (if your fillets have skin) and spaced about 1 inch apart.

Step 4

Generously spread the glaze over the top and sides of the fish. Bake for 10-15 minutes*, or until the internal temperature at the thickest part reaches 145˚F on an instant-read thermometer, and the flesh flakes easily with a fork.