Pre-heat your oven to 160C Fan/350F/Gas Mark 4
To make the base whizz up the disgestive biscuits in a food processor along with the cinnamon. Mix the melted butter into the biscuit crumbs
Press the mixture into a lined 23cm springform tin and put it in the fridge for 30 minutes to chill
To make the cheesecake filling mix together the full fat cream cheese, the yolks from the eggs (keeping the whites), the caster sugar and the vanilla extract until it is smooth
Using an electric hand mixer beat the whites from the eggs until stiff and then fold them into the cream cheese mixture
Take the base out of the fridge and pour the cheesecake mixture on top. Put the tin onto a baking tray as sometimes a little butter can leak from springform tins when baking this cheesecake
Bake it for 40 minutes. Leave it to cool fully to room temperature before putting it in the fridge to chill and go completely cold
Whip up the double cream and spread it all over the top of the cold cheesecake
For the streusel topping mix together the melted butter, the plain flour, light brown sugar, the cinnamon and the salt
Cover the cheesecake generously with the streusel topping, pressing it into the cream
Make some icing using the icing sugar, the cinnamon and enough water to make it a thick consistency. Drizzle it all over the cheesecake, then dust over some icing sugar