Some more info on Benton's Sugar Shack in Thornton
https://www.bentonssugarshack.com/
Great food, but be prepared for a wait. They are only open on weekends and all the locals know the place well.
Some weekend you get lucky and they will be boiling down syrup in the room attached to the dining area ad will let you come in for a self tour.
When we had our place in Campton we would always swig over and endure the wait.