Co-star Alex Jones prepared some of Mary’s dropped scones for The One Show team to sample.
Matt admittedly thought they looked slightly lacklustre, but positive Mary, 82, found the best of the situation.
According to the baking expert, the flavour was spot on as she could clearly identify the orange zest.
However, Matt was less kind and set about teasing his colleague.
Mary explained that the beauty of the recipe was in its simplicity and that those young and old can make the dish.
Cheeky Matt, 40, saw the moment as an opportunity to swipe as he laughed that even children would produce a better product.
Mary defended Alex’s honour, saying: “Don’t you be rude.
“They’re delicious,” she added, while the pair laughed about the joke segment.
While on the show, Mary discussed her new television venture for the BBC.
Britain’s Best Cook will see Mary, Chris Bavin and Dan Doherty team up to judge a plucky batch of contestants.
The format will explore the country’s best “home cooks” and their ability to produce wholesome meals.
Speaking of the show, Mary previously explained: “It’s an absolute joy to be judging truly passionate home cooks with Dan and Chris.
“Like our contestants, we each have different backgrounds and ways of looking at food.
“I have to admit the boys have already taught me a thing or two!”
The One Show airs weeknights on BBC One at 7pm.