One pot prawn, spinach and tomato pasta

Ingredients

  • 1 tbsp extra virgin olive oil
  • 1 garlic clove, finely sliced
  • ½ tsp dried chilli flakes (optional)
  • 400ml/14fl oz vegetable stock, made with ½ stock cube
  • 75g/2¾oz dried wholemeal pasta shapes, such as penne
  • cherry tomatoes, halved
  • 50g/1¾oz baby spinach leaves
  • 125g/4½oz cooked and peeled prawns, thawed if frozen
  • ½ small lemon, finely grated zest only (optional)
  • freshly ground black pepper