Prep the slow cooker. Lightly spray the insert with oil or use a liner to prevent sticking and make cleanup easy.
Mix the sauce base. In a bowl, whisk buffalo sauce, chicken broth, melted butter, apple cider vinegar, garlic powder, onion powder, smoked paprika, and black pepper.
Add chicken. Place chicken breasts in the slow cooker.
Pour the sauce mixture over the top, making sure all pieces are coated.
Cook low and slow. Cover and cook on Low for 4–5 hours or on High for 2–3 hours, until the chicken shreds easily with two forks. Avoid lifting the lid too often; it releases heat and slows cooking.
Shred the chicken. Transfer chicken to a cutting board or plate and shred with two forks. Return it to the cooker.
Adjust creaminess and heat. Stir in Greek yogurt or light cream cheese if you want a creamier, slightly milder sauce.
Taste and add salt if needed, or a splash more buffalo sauce for extra kick.
Reduce the sauce (optional). If the mixture looks thin, leave the lid off and cook on High for 15–20 minutes, stirring occasionally, until thickened.
Build meal prep bowls. Divide your base (rice, quinoa, or roasted sweet potatoes) into containers. Top with buffalo chicken and add a veggie side like broccoli or slaw. Garnish with green onions and a drizzle of ranch or blue cheese if you like.
Cool before sealing. Let containers cool until just warm to the touch before sealing and refrigerating.
This helps prevent condensation and soggy sides.