1Start with six to eight apples, peel them, core them, and slice them paper-thin, about one to two millimeters. You can use a knife or a mandolin works best for this.
2Add orange zest and fresh orange juice to the sliced apples. The zest brings the flavour, and the juice keeps the apples from browning.
3Mix well so every apple slice is coated with the orange zest and juice.
4For the batter, whisk eggs and caster sugar until pale and smooth.
5Add melted butter, milk, vanilla, cinnamon, and nutmeg to the egg mixture.
6Whisk again, then add the flour and mix just until combined. The batter will be very thin, but that's correct.
7Pour the batter over the apples and mix thoroughly so every slice is coated.
8Line a loaf tin with parchment paper, leaving an overhang for easy lifting.
9Transfer the apples into the tin. You can layer them neatly or press them in naturally, but pack them tightly.
10Pour over any remaining batter.
11Bake at 170°C for about an hour. If it browns too quickly, you can loosely cover with some foil.
12Once baked, cool for fifteen minutes before brushing with warm apricot jam for shine.
13Let it cool completely before lifting out.
14Slice, dust with icing sugar, and serve warm or at room temperature.