This Slow Cooker Beef Manhattan Sandwich brings together shredded roast beef, mashed potatoes, and rich brown gravy on thick white bread for a comforting, home-style meal with minimal effort.
3 lb chuck roast
1 large onion, sliced
2 garlic cloves, minced
2½ cups beef stock
2 tbsp Worcestershire sauce
Salt and pepper, to taste
2 tbsp cornstarch
3 tbsp cold water
Thick-sliced white bread
3 cups mashed potatoes
Place roast in the slow cooker and season with salt and pepper. Add onions and garlic.
Pour in beef stock and Worcestershire sauce. Cook on LOW 8–10 hours or HIGH 4–5 hours.
Remove and shred the roast. Return shredded beef to the slow cooker.
Mix cornstarch with water to create slurry. Stir into slow cooker and cook on HIGH 15–20 minutes until thickened.
Serve over slices of bread with mashed potatoes and plenty of gravy.