The TV chef began pouring a tomato-based sauce into the pan which is when things went a tad wrong.
As he did, flames from the hob began to rise, although, while his guests looked on in shock, Simon didn’t seem to be bothered at all.
Actress Susanna put her hands over her mouth, while Sarah just sat there with her mouth open in shock.
“Fire,” Tim chipped in as Simon continued to stir the dish casually.
He then commented: “That’s nice, that’s lovely.”