Attendees donned virtual reality (VR) headsets, and they ate the Kellogg's cereal while sitting at a table with queen Cleopatra.
The 360-video also let them look around the elaborate palace and glimpse the pyramids in the background.
Countdown presenter Rachel Riley – the face of the range – dressed up as the Egyptian queen for the event.
The activity forms part of a £7.5 million multi-channel campaign to promote the brand's new Ancient Legends varieties, which incorporate so-called 'ancient grains' like spelt, quinoa, chia and flax seeds.
Kellogg's 360 video from the experience is now available to view via the brand’s Facebook page.
Ruth Gresty, marketing manager, Ancient Legends at Kellogg's said: "Ancient Legends is a huge investment that Kellogg’s has committed to across Europe, and we’re already seeing fantastic sales results here in the UK.
"We expect Ancient Legends to join the pantheon of Kellogg’s best loved brands, with the same level of public recognition as Special K, Rice Krispies and Corn Flakes."
Earlier this year Kellogg's brand Pringles announced plans to celebrate its 25th birthday with an intimate performance from pop star Olly Murs.