Penggeser Steak Keju Philly

Bahan-bahan (12 porsi)

• 12 Hawaiian sweet rolls
• 1 pound steak serut daging sapi, (atau steak rok)
• 2 tablespoons olive oil
• ½ medium onion (sliced)
• 1 g reen bell pepper (sliced)
• garam dan merica, (secukupnya)
• 2 tablespoons saus Worcestershire
• 6 slices keju provolon
• 3 tablespoons mentega
• ¼ teaspoon garam bawang putih
• 1 teaspoon dried onion flakes