Barbeque Chicken Sandwhiches

1 tbsp.butter
1 small green pepper, chopped (about 1/2 cup) (optional)see savings
1 small onion , chopped (about 1/4 cup)see savings
1/4 cupchopped celery
1/2 cupbarbecue saucesee savings
1 can(12.5 ounces) Swanson® Premium White Chunk Chicken Breast in Water, drained

1. Heat the butter in a 2-quart saucepan over medium heat. Add the pepper, if desired, onion and celery and cook until they're tender, stirring occasionally.

2. Stir the barbecue sauce and chicken in the saucepan. Cook until the mixture is hot and bubbling, stirring occasionally. Divide the chicken mixture among the rolls.