Frying pan filo tart - Good Food Middle East

Ingredients

• 2 tbsp olive oil
• 4 spring onions, sliced
• 1 courgette, halved lengthways and sliced
• 100g frozen peas
• 100g sugar snap peas or mangetout, trimmed
• 400g can butter beans, drained
• 150ml reduced-fat crème fraîche
• ½ small bunch of mint, leaves picked and chopped
• ½ lemon, zested
• 3 sheets filo pastry
• 1 egg, beaten
• 25g feta, crumbled
• salad leaves, to serve (optional)