My younger brother and I have been trying for YEARS to find a movie we both remember from the late 1980s or very early 1990s. It was a kids movie, very low-budget, either for TV or straight to VHS. It was available in the US, but may have been Canadian.
The plot involved a group of kids, one of whom we think was a blonde girl, following a magic rabbit into a house that turned out to be some sort of funhouse. They are unable to leave unless they answer riddles, pick doors, and follow the rabbit until they find their way out. At one point they have to choose between a series of doors, and one leads out to a stage where a magic show is happening. There is also a magician type character, who was unintentionally creepy. He sort of guides them on their way.
It was NOT the Peanut Butter Solution, but had a similar production quality.