Hot Cheesy Philly Cheesesteak Dip

Bahan-bahan (12 porsi)

• 8 -10 ounces ribeye steak (* see note)
• 1 tablespoon olive oil
• 3 tablespoons butter
• 1 onion (finely diced)
• 1 g reen bell pepper (finely diced)
• 8 ounces cream cheese (softened)
• ¾ cup sour cream
• ½ teaspoon garlic powder
• 1 tablespoon Worcestershire sauce
• 2 ½ cups shredded provolone cheese (divided)