Italian Sausage Rolls with Parmesan Pastry - Filippo Berio

Ingredients

• 325g plain flour, plus extra for kneading and rolling
• 50g freshly grated Parmesan cheese, plus extra for sprinkling
• 150ml Filippo Berio Classico Olive Oil
• 4-5 tbsp cold water
• Salt
• 1 tbsp Filippo Berio Classico Olive Oil
• 1 large red onion, thinly sliced
• 450g Italian sausages, skins removed
• 3 tsp fennel seeds
• 1 egg, beaten