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Ingredients
- 1 lb (450g) ground beef (or thinly sliced steak, such as ribeye or sirloin)
- 1 large onion, sliced thinly
- 1 green bell pepper, sliced thinly
- 1 red bell pepper, sliced thinly
- 2 cups mushrooms, sliced (optional but adds great flavor)
- 1 tbsp olive oil
- Salt and pepper to taste
- 1 tsp garlic powder
- 1 tsp onion powder
- 1 tsp Worcestershire sauce (for that savory, umami kick)
- 8 oz cream cheese, softened
- 1 cup shredded provolone cheese (or a mix of provolone and mozzarella for extra gooeyness)
- 1/2 cup shredded cheddar cheese (optional, for topping)
- Fresh parsley, chopped (optional, for garnish)