East Glacier Park's most buzzed-about restaurant serves a mean chile relleno. Renowned for its excellent iced margaritas, Serrano's also has economical burritos, enchiladas and quesadillas in the vintage Dawson house log cabin, originally built in 1909. Expect a wait.
Out back there are three spartan backpacker cabins for rent (dorm/room $20/50) in the adjoining yard.