The final saw Laurian Veaudour’s team from Cardiff’s Cocorico Patisserie go up against RAF chef Liam Grime and his companions in an epic eight-hour challenge.
However, just moments before the latter were named the 2017 champions, those at home spotted something far from tasty in one of their desserts.
As the camera cut to some of their fruit-adorned treats, there appeared to be a green insect walking across it.
Fans rushed to Twitter to discuss their shock, praying that neither judges Benoit Blin and Cherish Finden accidentally tucked into the creature.
Bake Off Creme de la Creme final 2017: Liam Grime's team were tonight crowned the winner
Bake Off Creme de la Creme final 2017: Viewers spotted a bug in one of their desserts The biggest TV gaffes Tue, December 13, 2016
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Hope nobody ate that greenfly
“Er… did anyone else see the aphid crawling up the apple and blackberry dessert? A real taste of the British countryside #GBBOCreme,” one user remarked.
Two others agreed: “#gbbocreme green fly on finals dessert. Extra protein yummy,” and: “Are we ignoring the green fly that was in that grape?!? #GBBOCreme.”
A fourth continued: “Hope nobody ate that greenfly #GBBOCreme,” as another wrote: “Mmmmnmm dessert with added greenfly! #GBBOCreme.”
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Bake Off Creme de la Creme final 2017: The judges initially panned their offerings
Bake Off Creme de la Creme final 2017: Viewers were happy the military team won
However, despite the unusual ingredient making an appearance, the majority were chuffed the military cooks won with their World War Two themed offering.
The trio managed to turn their fate around after failing to impress with the first round of tasting, with people fearing it was all over for them.
Two tweets stated: “Aargh! The boys have blown it I reckon #GBBOCreme,”(sic) and: "I'm concerned the military boys have blown this with consistently poor creme anglaise #GBBOCreme.”