Chicken Peas and Rice

1 Can Cream of Chicken Soup
1/2 c. Milk
2 c. Cheese, shreddeed
2 small or 1 lg. can of chicken
1 1/2 c. peas
2 c. cooked Rice
1/2 c. Chopped Onion (opt)

Mix together in a bowl.  Bake in an 8 x 12 pan sprayed with cooking spray.  Bake @ 375 degrees for 30-35 minutes