Place chicken breasts in the bottom of your slow cooker.
Add onion, garlic, white beans, diced tomatoes, chicken broth, buffalo sauce, chili powder, and cumin. Stir to combine.
Cover and cook on LOW for 4-6 hours or HIGH for 2-3 hours, until chicken is tender and cooked through.
Remove chicken and shred with two forks. Return shredded chicken to the slow cooker.
Stir in softened cream cheese until fully melted and incorporated. Let cook for an additional 15 minutes.
Serve hot, topped with blue cheese crumbles and a drizzle of ranch dressing. Add celery sticks on the side for the full buffalo experience!