No bun but can get lettuce wrapped or in a bowl. Still very delicious and the only thing in their fryers are french fries. They use peanut oil and have loose peanuts. Never had an issue here. They call out there's an allergy and most times the person who takes your order, makes it. In the few times when they don't, you can see where your order is at in the line when you see the gloves change!