Chicken. casserole - great for leftovers

Easy Chicken Casserole
makes 4 to 5 servings

Ingredients:
4 skinless, boneless chicken breast halves
1 (10.75 ounce) can condensed cream of chicken soup
1 cup sour cream
32 buttery round crackers
1/4 cup chopped onion (optional)
1/4 cup chopped mushrooms (optional)

Instructions:
Preheat oven to 350 degrees F (175 degrees C).
Boil chicken until cooked through (no longer pink inside), about 20-30 minutes. Chop into bite size pieces and place in a 9x13 inch baking dish.
Combine soup, sour cream, onion (optional) and mushrooms (optional). Pour mixture over chicken and top with crumbled crackers. Cover and bake at 350 degrees F (175 degrees C) for 30 minutes (or freeze for baking at another time).