1 cup shredded reduced-fat mozzarella cheese
1 cup shredded reduced-fat cheddar cheese
1/4 cup julienned sun dried tomatoes
1 tsp. Dijon mustard
3 cloves garlic, minced
2 tbsp. all -purpose flour
1 1/2 cup 2% milk
Kosher salt and freshly ground black pepper, to taste
2 boneless, skinless thin-sliced chicken breasts
1 tbsp. olive oil
3 cups broccoli florets
12 oz. pasta shells