Philly Cheesesteak Recipe

Ingredients

• 1 large onion, sliced
• 1/2 pound sliced fresh mushrooms, optional
• 1 small green pepper, sliced, optional
• 1 small sweet red pepper, sliced, optional
• 6 tablespoons canola oil, divided
• 1-1/2 pounds beef ribeye steaks, thinly sliced
• 4 crusty Italian rolls, split
• Process cheese sauce
• Ketchup, optional