By day, Chris Holmes worked at London’s Stansted Airport as an officer with Britain’s Border Force. But by night, he was known as Mr. Cake — an aspiring baker with a burgeoning business in pastries and desserts.  So when the time came to quit his day job, Holmes did it in style.

Holmes turned up to work on Monday — his 31st birthday — with a cake inscribed with his letter of resignation:

Here’s the text in full:

To The Management,
Border Force, Stansted:
Today is my 31st birthday, and having recently become a father I now realise have precious life is and how important it is to spend my time doing something that makes me, and other people, happy.
For that reason I hereby give notice of my resignation, in order that I may devote my time and energy to my family, and to my cake business which has grown steadily over the past few years.
I wish the organisation and my colleagues the best for the future and I remind you that, if you enjoy this cake, you can order more at www.mrcake.co.uk
Sincerely,
Chris Holmes
(Mr Cake)

Holmes came up with the idea six months ago, when his wife was pregnant (son, Benjamin, was born five weeks ago). “Timing-wise, it’s quite a risk [to launch a business] with the economy as it is at the moment. But I have looked at the books time and again and every way I look at it, it is viable as a sole employment,” he told the Guardian.

For his farewell treat,  Holmes created a carrot cake — also known as a “passion cake” — spiced with pecans and sultanas and coconut. The choice of passion cake was intentional, “given I was following my passion. If it all goes to plan, Ben is to thank for giving me that kick to get on and do something I have a passion for.”

Holmes’ resignation went down well with his soon-to-be-former colleagues. “The people who tasted it say it was very nice,” said Toby Allanson, a spokesman for Border Force. Equally important, in the words of the assistant director of Border Force at Stansted, is that he “leaves with our very best wishes.”

Read more: TIME