Lighter Oven-Fried Fish | America's Test Kitchen

Ingredients

• 1 (5-ounce) box plain Melba toast , broken into 1-inch pieces
• 2 tablespoons vegetable oil
• 3 large egg whites
• 1 tablespoon Dijon mustard
• 2 teaspoons minced fresh thyme leaves
• 1/4 teaspoon garlic powder
• 1/8 teaspoon cayenne pepper
• 4 1-inch-thick cod fillets (about 6 ounces each)
• Vegetable cooking spray
• 1 lemon , cut into wedges for serving