Sausage & courgette rigatoni - Good Food Middle East

Ingredients

• 3 good-quality pork sausages (we used Cumberland)
• 1 tsp olive oil
• ½ small fennel bulb, trimmed of any green and diced, any leafy fronds reserved
• ½ onion, diced
• 2 fat garlic clove, finely chopped
• 200g rigatoni
• zest and juice 1 lemon
• 100g mascarpone
• 1 medium-large courgette, grated
• 1 tbsp toasted pine nuts (optional), to serve
• 1 tbsp grated Parmesan, to serve