Objective: how do I make bircher muesli?

Which of the following solutions is more sound in terms of naive physics reasoning?

Select from:
(I) 1 green apple 1 cup natural muesli or even just rolled oats 1/2 cup orange juice or juice of choice 1/2 cup coconut yoghurt Instructions Coarsely grate the apple. In a bowl, place muesli, apple, juice and all but 1 tablespoon of yoghurt; mix to combine. Cover and place in the fridge for 1 hour or overnight. To serve, divide the mixture evenly across two bowls and top with a dollop of yoghurt and a slice of apple.
(II) 1 green apple 1 cup natural muesli or even just rolled oats 1/2 cup orange juice or juice of choice 1/2 cup coconut yoghurt Instructions Coarsely chew the apple. In a bowl, place muesli, apple, juice and all but 1 tablespoon of yoghurt; mix to combine. Cover and place in the fridge for 1 hour or overnight. To serve, divide the mixture evenly across two bowls and top with a dollop of yoghurt and a slice of apple.
(I)