2 garlic cloves, crushed
400g tin chopped tomatoes
pinch dried chilli flakes
2 tbsp olive oil
handful fresh basil or oregano leaves
salt
25g/1oz butter
1 free-range egg, beaten
100驳/3陆辞锄 mozzarella, cut into 5mm/录in-thick slices
4 chicken breasts
50g/1戮oz dry breadcrumbs (panko breadcrumbs work well)