This puff pastry tart is exactly the sort of cake I like to make on holiday: no need for a special tin or any fancy equipment. All you need is two sheets of puff pastry, a few easy-to-find ingredients and a few minutes’ preparation.
With its round shape, beautifully golden pastry and flaked almonds, it almost resembles a galette des Rois… but in a much lighter version! Inside, a cream made with Petits-Suisses and vanilla remains soft and melt-in-the-mouth, whilst a touch of lemon zest brightens the whole thing up without the need for any extra sugar.
It’s delicious when still slightly warm, but just as good when cold. In summer, I like to simply serve it with some fresh fruit – raspberries, strawberries, blueberries, peaches or apricots, depending on the season.
In a mixing bowl, mix the Petits-Suisses with the egg, sugar, custard powder and lemon zest until you have a smooth cream. 
Leave to cool on a wire rack, then sprinkle generously with icing sugar. Serve lukewarm or cold, perhaps with some fresh fruit. Using a sharp knife, score the surface into portions. This will make it easier to cut after cooking.