This Slow Cooker Buttery Beef and Potatoes recipe is an easy, comforting meal perfect for busy days. Tender chunks of chuck roast, baby red potatoes, carrots, and onions are slow-cooked together with garlic, black pepper, and savory onion soup mix, all topped with rich butter slices for a buttery, flavorful finish. The result is a hearty, melt-in-your-mouth stew with minimal effort and maximum taste.