I was traveling with friends (who are locals) from Managua to Leon, and they said we must stop here. Anything that involves trying new foods I am up for...especially cheese. These Quesillos Güiligüiste have 3 ingredients, cheese being the main one.
This place is right off the main road, and looks highly shanty. I would never have stopped here if I wasn't with people I knew with high recommendations. However the shop is legit - actually, it does have over 2,000 friends on Facebook plus ratings on TripAdvisor. Something I just looked up to find the place on a map.
Definitely worth it to stop for a snack or to try authentic Nicaraguan Quesillos Güiligüiste. They are delicious!