Heat oven 200 degrees. 

Place the courgettes snuggly in a single layer in a shallow ovenproof dish, cut side up. Brush with olive oil and bake for 20 minutes. 

Mix the breadcrumbs, pine nuts, spring onions, garlic, tomatoes, cheese and thyme. Season with a pinch of salt and plenty of black pepper. Heap on the top of the courgettes. 

Bake for a further 10-15 minutes or until the courgettes are softened and the topping is golden and crisp.