Chop nuts coarsely and toast in a non-stick pan until golden brown and fragrant. Put on a plate and let cool slightly.
Finely chop dried plums.
Squeeze juice from lemon.
Rinse and dry apple and pear, then quarter, core and finely grate.
Mix together yogurt, oats, apple juice, nuts and fruit. Season with lemon juice and divide between glasses or bowls.
Rinse and dry peaches, halve and pit. Cut peaches into slices. Top muesli with peaches and serve.