a) Boil your kettle and pour the water into a large saucepan on high heat. b) Add 0.5 tsp of salt. c) When boiling, stir in the rigatoni and cook for 12 mins. d) Drain in a colander, pop back into the pan, drizzle with a little oil and stir through to stop it sticking together. Leave to the side.

a) Meanwhile, trim the courgette, halve lengthways and slice into 1cm half moons. b) Roughly chop the parsley (stalks and all). c) Zest and halve the lemon. d) Peel and grate the garlic (or use a garlic press).

a) Heat a large frying pan on high heat (no oil) and add the courgette. b) Cook, until starting to brown, 3-4 mins on each side. c) Add the garlic and cook, stirring, for 1 min.

a) Once the courgettes are browned, reduce the heat and add the creme fraiche, water (see ingredients for amount) and vegetable stock paste to the pan. b) Season with salt and pepper. c) Stir together, bring to a simmer and cook until the sauce has thickened slightly, 3-4 mins.

a) Stir the prawns into the sauce and continue to simmer until the prawns are cooked through, 4-5 mins. IMPORTANT: Wash your hands and equipment after handling raw prawns. IMPORTANT: The prawns are cooked when pink on the outside and opaque in the middle. b) Add a splash of water if the sauce is a bit thick. c) Meanwhile, mix together the lemon zest and parsley in a small bowl.

a) Toss the drained pasta into the sauce. b) Add a squeeze of lemon juice to taste. c) Season with salt and pepper to taste, then serve in bowls topped with the lemon zest and parsley mix. d) Enjoy!