Crisp Mozzarella Sticks

INGREDIENTS

• 1 tablespoon minced fresh oregano
• 2 large egg whites
• 1 clove garlic, minced
• Kosher salt and freshly ground black pepper
• 8 sticks part-skim mozzarella string cheese, halved crosswise
• 1/3 cup whole wheat breadcrumbs
• 10 whole-grain melba toasts
• Large pinch ground cayenne, optional
• 1/3 cup store-bought marinara sauce, warmed, for serving
• 1/3 cup whole wheat pastry flour or unbleached all-purpose flour
• Olive oil cooking spray, for coating the cheese sticks
• 1 large egg