Begin by placing the boneless skinless chicken breasts in the bottom of your slow cooker. It's okay if they overlap a bit; they'll cook down and become tender.
Sprinkle the Lipton's onion soup mix evenly over the chicken. Next, pour the can of unsalted cream of chicken soup over the top, spreading it out gently to cover the chicken.
Open the box of Uncle Ben's Long Grain & Wild Rice and sprinkle the rice mixture over the soup-covered chicken. Do not stir yet; we want the rice to absorb the flavors as it cooks.
Cover the slow cooker and set it to cook on low for 6-8 hours. This slow cooking allows the flavors to meld beautifully, and the chicken will become fork-tender.
Once the cooking time is up, open the lid and stir in the sour cream and cubed Velveeta cheese. Mix well to ensure everything is combined and the cheese is melted into the dish.
Spoon the cheesy chicken and rice into bowls and serve it warm. This dish is perfect on its own but can be paired with a simple side salad or steamed veggies for a complete meal.
