Preheat the oven to 140c (fan).
Whisk the egg whites until stiff.
Gradually add the sugar, whisking well in between each addition.
Spoon into a circular shape on baking parchment paper on a baking sheet.
Slice the apples into wedges, place them on to another baking sheet lined with baking parchment. Sprinkle with caster sugar.
Put both the meringue and the apples into the oven for about an hour. Check your apples after 30 minutes, they are finished when they have turned golden and caramelised.
Turn off the oven and allow the pavlova to cool for around an hour.
Whisk the cream in another bowl and then stir in a half of the tin of caramel.
When you are ready to serve, top with cream, cooled apples and rest of the caramel. Sprinkle with sea salt.
(You can also warm the caramel very slightly before drizzling over the apples to make it easier to spoon over.)
Enjoy!