Preheat oven to 160C and grease & lightly flour a
13in by 9in oven dish.
Peel and chop the apples putting them in a bowl.
Sprinkle the cinnamon ,zest and lemon juice over
them and stir.
In another bowl beat the eggs ,oil and vanilla
with a whisk .I used a hand whisk .
Add the sugar and whisk some more until well
Sift in the flour,baking powder & pinch of salt
and add the ground hazelnuts.
Mix in with a spoon until you have a smooth
Stir in the apples ,do not worry if if see that
that it seems there is too little batter and a lot
of apples when it bakes it will expand nicely.
Spread in the oven dish and bake until skewer
comes out clean ,mine was ready in about 35
minutes in a fan oven. Best is to set timer for
30minutes and check as not all ovens are the same.