Mix the Speculoos Crumbles with the butter and press inside a cake ring layer with aluminum foil in a mixer combine cream cheese, liquid cream and sugar and all Flavors mix creamy add the sour cream and the eggs add the corn starch and mix well with whisk.
Pour inside the ring and lay a parchment paper at the border fill up 75% and place ring on a tray with water bath and bake at 180°C for 30 mins then lower temperature to 150°C 20 mins and then switch off oven and leave cake inside another 60 mins.
Once cool add Blueberry Filling on Top and serve chilled.