Preheat the oven to 350°F (175°C).
Heat oil in a large pan over medium heat. Add onions, bell peppers, and mushrooms; cook until tender (about 7-10 minutes).
Add chopped garlic and cook until fragrant (about a minute) before removing from heat.
In a large bowl, mix ground beef, salt, pepper, cheese whiz (if using), Worcestershire sauce, ketchup, eggs, breadcrumbs, and the cooked onion, pepper, mushroom, and garlic mixture.
Place half of the mixture down, add the solid piece of provolone in the middle, top with the remaining mixture, seal the edges well, shape the loaf as desired, and place it on a baking sheet.
Bake in the preheated 350°F (180°C) oven until cooked through (about 50-60 minutes).
Spread the sliced provolone over the top of the loaf, return to the oven, and broil until the cheese has melted (about 2-4 minutes).
Nutritional Information:
Prep Time: 20 minutes
Cooking Time: 60 minutes
Total Time: 80 minutes
Calories: 550 kcal
Servings: 8 servings
ADVERTISEMENT
