Combine the biscuit crumbs and the butter. Pat mixture into the bottom of a 23cm springform pan.
2.
Mash cream cheese until soft and creamy. Gradually beat in sour cream, 3/4 cup sugar, vanilla and flour. Beat in eggs one at a time.
3.
Pour mixture into the base. Bake in a preheated 165 degrees C oven for 1 hour or until firm to the touch.
4.
Cool and then remove cake from pan by loosening edges with a knife. Place blueberries on top of cake. Warm the jam and spoon over blueberries to glaze. Chill until ready to serve.