PREPARATION
In a large skillet, heat the ground beef and garlic powder until it is browned. Transfer the beef to a plate.
Butter, onions, and peppers should be added to the skillet. Cook for 4-5 minutes.
Stir in Worcestershire sauce and ketchup. Add cornstarch to 2 tablespoons beef broth. Mix in the rest of the beef broth.
Allow to simmer for at least 30 minutes. Adjust the seasoning as necessary.
Take off heat and add provolone cheese. Serve on toasted hamburger buns.
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