Melty mushroom Wellingtons - Good Food Middle East

Ingredients

• 4 large field mushrooms
• 4 tbsp olive oil
• 1 garlic clove, chopped
• about 400g/14oz spinach leaves
• a dusting of flour
• 1 tbsp picked thyme leaves
• 500g block all-butter puff pastry
• 140g Stilton, sliced
• 1 egg, beaten