Cheesy Basil Tomato Chicken

My whole family loves this recipe! It is easy and tastes oh so good.....

Sauce:
3 tbsp. butter or margarine
1 can diced tomatoes
1/3 cup chopped onion
6 oz can tomato paste
1 tbsp basil leaves
1/2 tsp salt
1/4 tsp pepper
2-3 cloves minced garlic cloves
6 boneless skinless chicken breast halves

Topping:
1 cup seasoned bread crumbs
2 tbsp. butter or margarine, melted
6 oz. shredded mozzarella cheese

Heat over to 350 degrees. In a 9x13 pan melt 3 tbsp. butter in the oven (4-6 min). Meanwhile, in a medium bowl stir together remaining sauce ingredients except chicken; set aside. Place chicken in the pan, turning to coat with butter. Spoon sauce mixture over chicken. Bake for 30-40 min. (until chicken reaches 150 degrees). Meanwhile, in a small bowl stir together all topping ingredients except cheese. Spread cheese over chicken; sprinkle with topping mixture. Continue baking 5-10 min. (until chicken reaches 165 degrees) and the crumbs are browned.