COOK IT.
Place the apricot conserve into a small saucepan and simmer for 5 minutes. Strain and set aside to keep warm.
Pre heat the KILN with the main burner on low and, if using the KILN R Series, the boost burner needs to be off.
Place the chilled pastry rectangles on a baking tray that is lined with baking paper. Brush the top of the pastry with the egg yolk, then make parallel lines over the pastry using a fork.
Combine the ground hazelnuts, demerara sugar and melted butter until a paste is formed. Place a teaspoon of this paste onto the center of each pastry.
Wash, peel and halve the apples. Remove the core using a melon baller and cut away any visible stems. Cut the apple halves into 5mm slices and arrange four slices onto each pastry.
Scrape out vanilla seeds and mix them in a blender with the caster sugar and lemon zest. Sprinkle a small amount of this sugar over the apple slices.
the baking tray into the middle of the KILN. After 12 minutes, the pastries should be golden and crisp. If they are browning too quickly, cover with aluminum foil and bake until ready. Remove and lightly brush each pastry with the apricot glaze.