Artichoke & wild mushroom pie - Good Food Middle East

Ingredients

• 3 tbsp olive oil
• 2 large onions, finely sliced
• 300g grilled artichoke hearts, halved
• 300g mixed mushrooms, halved if large
• 1 garlic clove, crushed
• 1 tsp fresh thyme leaves
• 500g pack ready-made shortcrust pastry
• 1 egg, a pinch of salt and 1 tbsp water, beaten together to glaze
• large handful flat leaf parsley leaves, very roughly chopped
• 142ml carton soured cream, to serve