Pop the tray of fish in the oven. Bake for 8-15 minutes (depending on the thickness of the fillets) or until the internal temperature in the thickest part of the fillet reaches 145°F. No meat thermometer
? Cook until the fish is opaque and flakes easily when nudged with a fork. (P.S.: 1-inch fillets take about 10 minutes, but thinner fillets can cook quicker).