Pre-heat the oven to 180 degrees C
Place the peeled and slice apples in a saucepan
Add the water and sugar
Over a medium heat, gently cook the apples until soft
Remove from heat
Gently stir in the egg yolks
Set aside to cool
Whisk the egg whites until stiff
Add the sugar a little at a time whilst still whisking until smooth and stiff
Grease a baking dish
Place the apple mixture on the bottom
Spoon the meringue on top
Bake in the oven for about 30 minutes, until the meringue is brown.