4 boneless skinless chicken breast halves (4 oz each)
1/4 tsp each salt and pepper
4 slices red onion
2 tbsp butter, softened
4 hamburger buns, split
2 cups torn romaine
1 tbsp grated Parmesan cheese
1/2 cup Caesar salad dressing, divided
Sprinkle the chicken with salt and pepper. Grill on an indoor grill coated with coated with cooking spray for 4-5 minutes or until juices run clear. Grill onion slices for 4-5 minutes or until tender.
Meanwhile, spread the butter over cut sides of buns. Place buttered side up on an ungreased baking sheet. Broil for 1 minute or until golden brown.
Toss romaine with cheese and 1/4 cup dressing; spoon onto bottom buns. Top with onions, chicken and remaining dressing. Replace bun tops and serve!