Barbecued Chicken Sandwiches

• 34 cup onion, chopped
• 23 cup tomato sauce, no-added-salt
• 2 tablespoons sugar
• 2 tablespoons balsamic vinegar
• 2 teaspoons garlic powder
• 1 teaspoon celery seed
• 1 teaspoon chili powder
• 2 teaspoons Worcestershire sauce, low sodium
• 2 cups chicken breasts, cooked, chopped (skinned before cooking)
• 4 whole whole wheat hamburger buns

1. Preheat oven to 350.
2. In a large bowl, combine first 8 ingredients.
3. Set aside < cup of this tomato sauce mixture.
4. Mix remaining tomato sauce mixture with chopped chicken in a baking dish.
5. Cover with foil and bake for 30 minutes or until heated through.
6. Spoon 1/2 cup chicken mixture onto bottom half of each hamburger bun; spread reserved tomato sauce mixture evenly over top of chicken mixture.
7. Top with remaining bun halves.

onion, tomato sauce, sugar, balsamic vinegar, garlic, celery, chili powder, worcestershire sauce, chicken breasts, whole wheat hamburger buns

Taken from www.food.com/recipe/barbecued-chicken-sandwiches-3391 (may not work)