Creating Slow Cooker Beef Manhattan is straightforward if you follow these easy steps:

1. Prepare the Beef: Trim excess fat from the beef chuck roast, and season it with salt and pepper.

2. Sear the Beef: In a hot skillet, sear the beef on all sides until browned (optional but adds flavor).

3. Combine Ingredients: In your slow cooker, combine beef broth, onion soup mix, cream of mushroom soup, Worcestershire sauce, garlic powder, and onion powder.

4. Add the Beef: Place the seared beef into the mixture, ensuring it is well coated.

5. Cook: Cover the slow cooker and cook on low for 6-8 hours or on high for 4-5 hours until the beef is tender.

6. Prepare Potatoes (if using): If you’re serving with potatoes, boil the diced potatoes in salted water for about 15-20 minutes until tender. Drain and mash with butter and salt.

7. Shred the Beef: Once cooked, remove the beef from the slow cooker and shred it using two forks.

8. Thicken the Gravy: If you prefer a thicker gravy, you can transfer the remaining liquid to a pot and simmer it for a few minutes to reduce.

9. Combine: Return the shredded beef to the crockpot and stir to coat in the gravy.

10. Serve: Ladle over mashed potatoes or toasted rolls as desired.

These steps will guide you in creating an amazing Slow Cooker Beef Manhattan that your family will request again and again.