Philly Joes | Cooking Professionally

Ingredients

• 1 teaspoon vegetable oil
• 1 pound ground beef
• 1 medium onion, diced
• 1 medium green bell pepper, diced
• 1 cup beef broth
• 2 tablespoons ketchup
• 1 tablespoon Worcestershire sauce
• salt, to taste
• pepper to taste
• 1 tablespoon cornstarch
• 1 tablespoon water
• 6 ounces provolone cheese, sliced or in chunks
• 8 hamburger buns
• 1 tablespoon butter, optional