Cook the pasta according to packet instructions. Drain and set aside.
Meanwhile, air-fry or pan-fry the sausages until browned and cooked through. Slice them into bite-sized pieces and set aside.
In a large frying pan or wok, spray with low-calorie cooking spray and sauté the onion for 3–4 minutes until soft. Add a splash of water if it sticks.
Add the garlic, red and green peppers, smoked paprika, Cajun seasoning, and chilli flakes (if using). Stir well and cook for a further 3–4 minutes.
Stir in the tomato purée and cook for 1 minute. Then add the chicken stock and bring to a gentle simmer.
Add the prawns and sliced sausages to the pan. Cook for 3–4 minutes until the prawns are heated through.
Stir in the light cream cheese until melted and the sauce becomes creamy. Season with salt and pepper to taste.
Toss the drained pasta into the sauce and stir until everything is well coated and heated through.