Add all ingredients (reserving ½ cup of mozzarella for topping) to a large bowl and mix well.
Pour into 9x13 baking dish, sprinkle with remaining ½ cup mozzarella cheese and cover with foil.
Bake covered in a 350 degree oven for 35 - 45 minutes. Uncover last 5 - 10 minutes to brown cheese if desired.
Serve with dinner rolls.
