posted 4 years ago
Last year, I grew a small maxima hybrid called Blue Magic which is a mini version of a Hubbard and matured early that looked a lot like that.
It could be any one of dozens of squash - many people deliberately 'create their own hybrids' or don't bother keeping varieties pure (like me) so it could be something completely unique, too!
If it's a Maxima, I would let it cure for a few weeks fo sweeten it before cooking.