2 large, flat Portobello mushrooms (150g/5Β½oz total weight), wiped clean, stalks finely chopped
1 stick celery, thinly sliced
30g/1oz baby spinach
1 spring onion, thinly sliced
1 tomato, halved
salt and freshly ground black pepper
20g/ΒΎoz fresh breadcrumbs
1 tsp olive oil
1 bacon medallion (30g/1oz), roughly chopped