✔ 1 lb (450g) ground beef (or ground turkey)
✔ 1 tablespoon olive oil
✔ 1 small onion, diced
✔ 1 green bell pepper, diced
✔ 1 teaspoon salt
✔ ½ teaspoon black pepper
✔ ½ teaspoon garlic powder
✔ ½ teaspoon smoked paprika (optional)
✔ 1 tablespoon Worcestershire sauce
✔ ½ cup (120ml) beef broth
✔ 1 tablespoon cornstarch (or flour, for thickening)
For the Cheese Sauce:
✔ 1 cup (120g) shredded provolone or mozzarella cheese
✔ ½ cup (120ml) heavy cream or milk
✔ 1 teaspoon Dijon mustard (for extra flavor, optional)
✔ ½ teaspoon salt
For Serving:
✔ 4 soft sandwich buns or hoagie rolls
✔ 2 tablespoons butter (for toasting the buns)
