Ingredients
Filling
Topping
Method
1.Preheat oven to 180°C. Lightly grease a 20cm springform pan.
2.Sift flour and bicarbonate of soda together into a large bowl. Add butter and rub in, using fingertips, until mixture resembles fine breadcrumbs. Stir in sugar, egg-yolk and enough juice to make a pliable dough. Press into base and sides of pan. Chill.
3.Meanwhile, to make filling, combine all ingredients for filling in a saucepan. Bring to boil on high. Cook, stirring, for 10-15 minutes, until pulpy. Mash roughly and allow to cool. Spread over prepared pastry case.
4.Make topping by combining sour cream, egg-yolk, brown sugar and zest, in a bowl. Spread over apple mixture. Sprinkle with combined caster sugar and cinnamon.
5.Bake for 35-40 minutes, until pastry is golden and topping is set. Cool in pan for 10 minutes. Serve warm or cold, sliced, with whipped or pouring cream.