Barbecue Chicken with Mushrooms and Caramelized Onions

3-4 boneless skinless chicken breasts
Barbecue Rub
Mushrooms,
sautéedOnions, caramelized
Cheddar cheese, grated

Slice the chicken breasts in half to make thinner pieces of meat. Sprinkle both sides of the chicken with the Barbecue Rub. In a large skillet, sauté in a hot pan until done and lightly browned on both sides. Cook the chicken in batches, don't crowd the pan. Return all of the chicken pieces to the pan and top with mushrooms, onions and cheese. Put the lid on the pan and let sit off the heat until the cheese is melted.