I would make the case that the New Kingdom period was one, specifically the early Ramesside period. There was a return to the traditional cults after the 'heresy' of Akhenaten, they were one of the two dominant superpowers of that region (the Hittites being the other) and were fabulously wealthy. Ramses II instituted a massive building program throughout Egypt and the ultra conservative art style had loosened a bit, the lasting affecting of Amarna art. I guess it depends on what you define a "golden age" as?

I've always assumed a "golden age" was a time when a countries people were united and thriving.

If we go with this definition, I would agree Agrippa911 that early Ramesseid period marked the peak of Egyptian economic prosperity and imperial power. One might also make the case that the early 18th dynasty was another peak, before the Amarna period and during the rule of Ahmenhotep III and others.

There was no racial or gender bias

If you keep that in your definition of golden age, you're likely to not get very far.