recipe for chicken casseroles

Ingredients: 2 cups cooked chicken, shredded or cubed 2 cups cooked rice 1 cup broccoli florets, steamed 1 cup shredded cheddar cheese 1 cup cream of chicken soup (or substitute with a homemade version) 1/2 cup sour cream 1/2 cup milk 1/4 cup mayonnaise 1 small onion, diced 2 cloves garlic, minced