Season the beef chuck roast generously with salt and pepper. Sear it in a hot skillet for a few minutes on each side until browned. This step deepens the flavors but is optional if you're short on time.

In your slow cooker, place the sliced onion and minced garlic at the bottom. This creates a flavorful base for the meat.

Place the seared roast on top of the onion and garlic.

In a bowl, combine the beef broth, tomato sauce, Worcestershire sauce, smoked paprika, and chili powder. Pour this mixture over the meat.

Cover the slow cooker and set it to low for about 8 hours. The meat should be tender and shreddable.

About 30 minutes before serving, remove the roast from the slow cooker and shred the meat with two forks. Return the shredded meat to the pot, mixing it with the sauce.

Toast the hamburger buns if desired, and pile on the shredded beef. Add your favorite toppings, such as jalapeños, cheese, or coleslaw for an extra kick.

Gather your loved ones around the table, and enjoy your inviting cowboy sandwiches!