Place ingredients in a bowl and fold together gently until just mixed in.
Add sugar to the butter and whisk until smooth. Simmer for 1 minute.
Then add cream, vanilla, salt and apple. Simmer until soft.
Add half the caramel apple mixture to the muffin mixture and mix through gently.
Spoon the mixture into muffin tins until they are half full.
Put the remaining apple mixture on top of the muffin mixture and top with the remaining muffin mix.
Bake at 180degC for about 20 minutes or until springy on top.
