Use a food processor to turn the oreo biscuits into crumbs - or bash them in a bowl with the end of a rolling pin
Make the oreo crumb layers by mixing the oreo crumbs and butter together in a bowl
Then add a layer of the oreo crumbs to the bottom of your serving glasses - the glasses I used have a 250ml capacity - use a teaspoon to press the crumbs down to compact them
For the cheesecake layers use a food mixer with a whisk attachment or an electric hand whisk to mix together the cream cheese, icing sugar and vanilla extract
Once it is smooth with no lumps, add the double cream and whisk until it is very thick and holds it's shape
Then fold in the oreo crumbs
Use a piping bag to pipe a layer of the cheesecake over the crumbs, or use a spoon
Add another layer of crumbs, then another layer of cheesecake
Whip up the double cream with the icing sugar and the vanilla extract, and either pipe or spoon it on top
Add an Oreo biscuit to each glass for decoration, crush up the remaining biscuit and sprinkle some crumbs over the whipped cream
Serve immediately, store any leftovers in the fridge and eat within 2 days