01 -
Heat oven to 320°F (or 280°F fan). Put rack in middle.
02 -
Flip base of 8" springform pan upside down. Put parchment paper on it, clip back in. Grease and line sides too.
03 -
Crush crackers into crumbs. Mix with melted butter until wet like sand.
04 -
Press into pan bottom and a bit up sides.
05 -
Beat cream cheese just 20 seconds till smooth. Mix in flour.
06 -
Add vanilla, sour cream, sugar, lemon zest. Add eggs one at a time - don't overmix.
07 -
Fold in 250g blueberries. Pour into pan.
08 -
Bake 70 mins until light gold on top. Cool 2 hours in oven with door cracked.
09 -
Put in fridge 4 hours or overnight.
10 -
Cook 1 cup berries with vanilla, sugar, lemon juice - about 7 mins till syrupy.
11 -
Mix cornstarch with water, stir in to thicken. Add rest of berries.
12 -
Let cool, spread on cold cake. Chill again till set.