1Make the crust by crushing the nice biscuits to a medium/fine consistency.
2Mix in the Red Island until all crumbs are coated, if is still dry, add in some water.
3Press the crumb mixture into the bottom and sides of 9-inch spring form pan.
4Bake the crust until golden brown, about 8-10 minutes. Then set aside
5To make the filling, beat the cream cheese on high until light and fluffy, around 5 to 7 minutes.
6Add flour and beat until just combined. Then add vanilla, sour cream, sugar and lemon zest and beat on low until just combined.
7Add the eggs one at a time and beat in between until just combined. Try not to aerate the mixture too much.
8Pour mixture into the prepared crust and tap the pan to ensure all air bubbles are removed. Bake for 35-40 minutes, rotating half-way through. The top should turn golden brown.
9Turn the oven off and cool the cheesecake in the oven for around 40 mins before moving it to the fridge for a further 2 hours.