Lemony tuna, tomato & caper one-pot pasta - Good Food Middle East

Ingredients

• 2 tbsp olive oil
• 1 red onion, finely chopped
• 500g cherry tomatoes, halved
• 400g dried pasta (we used rigatoni)
• 1l hot vegetable stock
• 2 x 110g cans tuna in olive oil, drained
• 3 tbsp mascarpone
• 30g parmesan, grated
• 2 heaped tbsp capers
• ½ small bunch lemon, zested
• small bunch parsley, finely chopped