Low-Fat Crock Pot Chicken

• 4-6 boneless, skinless chicken breasts
• 1 can diet Pepsi or Coke
• 1 Cup ketchup
• 1 envelope onion soup (opt)

Combine all ingredients except chicken, and dump into the crock pot. Add the chicken and cook for 6 hours on high or 8 to 9 hours on low.