Spinach and thyme pasties - River Cottage

Ingredients

• 250g plain flour
• Pinch of sea salt
• 125g unsalted butter
• 75ml milk
• 350g spinach, any tough stalks removed
• 1tbsp rapeseed or olive oil
• 1 medium onion, finely chopped
• 1 garlic clove, finely chopped
• 125g goat’s cheese or ricotta
• 50g Parmesan, finely grated (optional)
• A pinch of freshly grated nutmeg
• A handful of thyme sprigs (lemon thyme is particularly good), chopped
• 1 tsp finely grated lemon zest (optional)
• 1 egg, lightly beaten
• Sea salt and freshly ground black pepper