Classic Philly Cheesesteak Delight

Ingredients

• 2 pounds Top sirloin steak or Ribeye, trimmed and sliced very thin
• 8 slices mild provolone cheese
• 1 large yellow onion, chopped
• 1 green bell pepper, sliced
• 1 red bell pepper, sliced
• 4 oz sliced mushrooms
• 1/2 teaspoon minced garlic
• 4 hoagie rolls, sliced
• 4 tablespoons butter, softened
• 4 tablespoons mayonnaise
• 2 teaspoons coarse Kosher salt
• 1/2 teaspoon black pepper
• 2 tablespoons vegetable oil