Combine the dry seasonings in a small bowl. Coat the roast in oil, then sprinkle evenly with the spices.
1 teaspoon garlic powder, 1 teaspoon onion powder, ½ teaspoon oregano, ½ teaspoon salt, ¼ teaspoon pepper, ¼ teaspoon dried thyme, 3-4 lb chuck roast, 1 tablespoon olive or avocado oil
Heat a large 12 inch skillet over high heat. Once hot, sear the roast for 4-5 minutes on each side. Place the roast in a 6 qt slow cooker.
Add the broth and bouillon to the hot skillet and simmer for 1 minute, scraping up the brown bits. Remove from the heat and add the coke, soy sauce, and worcestershire. Pour the liquids into the Crock Pot on top of the roast.
2 cups beef broth, 1 teaspoon or cube of beef bouillon, 1 cup coke, ⅓ cup soy sauce, 1 teaspoon worcestershire
Cook on low for 8 hours or on high for 4.5-5 hours. Once it is fall-apart tender, remove the roast from the post. Remove any large chunks of fat and discard them. Strain the remaining liquids and set aside; this will become your dipping sauce.
Spread the hoagie rolls with butter. Broil until golden brown.
6 hoagie rolls, 3-6 tablespoon butter
Assemble the sandwiches with the shredded beef and provolone cheese. Broil the cheese again if desired. Serve with au jus (remaining cooking liquids).
6 slices of provolone cheese