Place the nectarine halves cut side up in a roasting tin so they fit quite snuggly.
Mix together the walnuts, raisins, oats and honey and spoon over the nectarines. Add 4 tbsp boiling water to the bottom of the tin and bake for 20 minutes until tender and golden.
Serve with Greek yoghurt.
Cooks tip
Swap the raisins for other dried fruit such as apricots, sultanas or dates.