Chicken, spring onion & mustard pie - Good Food Middle East

Ingredients

• 1 tbsp olive oil
• 75g smoked pancetta, finely chopped
• 6-8 boneless, skinless chicken thighs, cut into bite-sized pieces
• 300g mushrooms, quartered
• 25g unsalted butter
• 200g spring onions, sliced, white and green parts separated
• 3 tbsp plain flour, plus extra for dusting
• 800ml chicken stock
• 1 tbsp Dijon mustard
• 2 bay leaves
• ¼ tsp ground nutmeg
• ½ tsp mustard powder
• small handful of thyme
• 150g fresh or frozen peas
• 150ml double cream
• 500g block puff pastry
• 1 egg, beaten
• steamed green veg and new potatoes, to serve