FRENCH ONION CHICKEN SANDWICHES RECIPE - (4.6/5)

French Onion Chicken Sandwiches Recipe - (4.6/5) image

Provided by tropicalsenior

Number Of Ingredients 8

1 tablespoon extra virgin olive oil
1 large white onion, thinly sliced
1 teaspoon granulated sugar
2 boneless, skinless chicken breasts, halved crosswise and pounded to 1-inch thickness, if necessary
Nonstick cooking spray
4 slices Swiss cheese
4 hamburger buns
2 cups baby spinach

Steps:

In large skillet, heat oil over medium heat. Add onion and sugar; cook 25 minutes or until onions are deeply caramelized, stirring frequently. This step can be done up to 3 days in advance. Re-warm onions in microwave or in a small pan on grill before proceeding. Preheat grill for direct grilling over medium-high heat. Spray chicken with nonstick spray. Transfer chicken to hot grill rack; cover and cook 10 minutes or until chicken loses its pink color throughout and internal temperature reaches 160º, turning once. Place cheese slices on chicken pieces. Cover and cook 1 to 2 minutes or until cheese is melted and golden brown. Build sandwiches using hamburger buns, spinach, chicken and caramelized onions.