The Best Chicken Parmesan

Ingredients

• olive oil
• finely chopped yellow onion
• garlic cloves, )
• can crushed Roma tomatoes
• dried oregano
• fresh basil sprigs*
• salt and freshly ground black pepper
• boneless, skinless chicken breasts
• whole-milk mozzarella cheese, )
• provolone cheese**, )
• large egg
• all-purpose flour
• Parmesan cheese, )
• Panko bread crumbs
• garlic powder
• torn fresh basil