Gather all ingredients—you’re going to love how simple this is.
Place the chicken breasts into your slow cooker. Pour three-quarters of the Buffalo wing sauce and sprinkle in the dry ranch salad dressing mix over the chicken.
Cover and set your slow cooker to Low. Cook for 6 to 7 hours. During this time, the chicken will turn juicy and tender, absorbing all the fantastic flavors.
When the cooking time is up, shred the chicken directly in the slow cooker using two forks. Stir in the butter for a rich, creamy finish.
Pile the shredded chicken mixture onto the hoagie rolls. Drizzle with some of the reserved Buffalo sauce for an extra layer of heat.
Serve and enjoy! Bonus tip: Add a side of crunchy celery sticks or a drizzle of ranch dressing to balance the spice.