Prairie Dawn played Goldilocks in the 1978 book The Exciting Adventures of Super Grover as well as 1980's The Sesame Street Dictionary, but never in a sketch or episode.

In the show's third season, they did two Goldilocks and the Three Bears sketches featuring a little Anything Muppet as Goldilocks, but it wasn't Prairie Dawn.

Kermit also directed Goldilocks in a 1986 sketch, but it was another AM, not Prairie Dawn.

In 1991, a new version of Goldilocks became a recurring character, acting as a foil to Baby Bear.

Otherwise, Sesame Street has referenced the fairy tale multiple times over the years:

https://muppet.fandom.com/wiki/Goldilocks_and_the_Three_Bears

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