Main casserole dish, great for preparing ahead of time and freezing.
Special note, to save time , buy a rotisserie chicken and jarred minced garlic to speed up prep time.Or buy a family pack of chicken and boil , then de bone and chop.
Preheat oven to 350. Spray a large baking or casserold dish with nonstick cooking spray.
In a large skillet, melt butter over medium high heat and cook for 5 to 6 minutes or until is tender. Add flour and cook for 2 minutes. Stirring constantly. stir in milk, diced tomatoes,and tomato sauce, cook for 5 to 6 minutes or until slightly thickened. Similar to making gravy from scratch.
Stir in chicken, 3 cups cheese,salt, pepper and sugar. Stir in pasta. Spoon mixture into baking dish, then sprinkle with remaining 1 cup cheese.