Revealed: Princess Diana let Prince Harry eat dessert for breakfast

A former chef of Princess Diana's has revealed how she used to indulge her son's sweet tooth. Photo / Getty Images

One of Princess Diana's personal chefs has revealed the naughty treat Prince Harry persuaded his mother to let him eat for breakfast as a little boy.

Carolyn Robb was the first ever female chef to be appointed by Prince Charles. She started working for the Prince and his then wife, Diana, at Kensington Palace in 1989.

According to the Daily Mail, Robb shared a note Princess Diana wrote her, which gives an insight into the kind of mum Diana was.

As soon as her youngest son, Prince Harry, woke up, he'd be after his favourite treacle tart, shared Robb. And he was very good at persuading his mother to let him eat it.

The first ever female chef appointed by Prince Charles, Carolyn Robb, started working for him and his then wife, Diana in 1989. Photo / The Royal Touch

Robb has recalled one morning when little Harry ran into the kitchen before breakfast requesting a treacle tart, which she would prepare in 50p sized pieces.

• READ MORE: Try this delicious treacle tart from bite.co.nz

Robb told him he had to ask his mother first.

Minutes later, he returned with a note from his mother which read: "Mummy says it's okay!" in Princess Diana's handwriting.

Robb said: "I have always treasured this wonderful little note."

Robb shared that Prince Harry was so obsessed with the tarts she would make, that she'd always keep a supply for him in the freezer.

Prince William would also enjoy something sweet. His favourite was a chocolate biscuit cake.

Treacle tart is a traditional British dessert using shortcrust pastry with a thick filling made from golden syrup, breadcrumbs, and lemon juice or zest. Photo / Getty Images

The Sunday Times reports Robb became very close with the boys and Princess Diana, who she said was "very easy to cook for" and loved "simple things" like souffles, salads, stuffed aubergine and cold minted lamb.

She claims Charles was "more demanding" and always wanted to have seasonal produce fresh from the garden.

Robb explained: "You wouldn't dare serve asparagus in December."

She says Diana would also often help with tidying up in the kitchen.

Prince Harry loved treacle tarts so much that Robb kept a supply for him in the freezer. Photo / Getty Images

Following their divorce, Robb continued to work for Prince Charles until 2000 and shared that she'd whip up "special treats" for the young Princes throughout what she called the "tricky time".

Robb even continued to feed their love for sweet treats when they went to Eton College, by sneaking biscuit cake and flapjacks into their packed lunches.