Ingredients:
1 ripe avocado, sliced
1 Tablespoon lemon juice
1 Tablespoon butter
1 large Vidalia onions, sliced into rings
4 boneless, skinless chicken breast halves
salt and pepper to taste
4 hamburger buns
4 Tablespoons mayonnaise
4 slices provolone cheese
additional spices for chicken, as desired
Directions:
In a small bowl, combine the sliced avocado and lemon juice.
Add water to cover; set aside.
Preheat an outdoor grill for high heat.
Lightly oil grate.
Heat butter in a large heavy skillet over medium-high heat.
Saute the onions until browned and caramelized.
Set aside.
Season the chicken with salt and pepper (and additional seasoning as desired).
Place on grill.
Cook until no longer pink and juices run clear, about 5 minutes on each side.
Place buns on grill just long enough to toast them.
Spread buns with mayonnaise to taste.
Layer with chicken, caramelized onion, provolone and avocado.