Place a non-stick pan on medium heat and add in a drizzle of oil. Add in the ground turkey, red onion, and garlic. Fry for 5 minutes until the turkey turns a light brown. Break apart the turkey mince, we don't want any big chunks.
Place the uncooked couscous in a bowl and cover with 150ml boiling water and a big pinch of salt. Cover with a plate and leave to soak for 10 minutes. Preheat the oven to 190c fan or 210c / 375F.
To your ground turkey pan, add in chopped olives, parsley, mint, paprika, your cooked couscous, and chopped tomatoes. Give everything a mix and then season with salt and pepper.
In the base of your oven-proof dish, add the tomato paste and 200ml of water. Give it a mix so it's well combined.
Slice the bell peppers in half lengthwise and remove the seeds and placenta. Then, stuff the pepper halves with the filling divided equally between the 8 halves. Delicately arrange the peppers into the oven-proof dish and top each pepper with 1 tablespoon of cheese. Place into the oven, covered in kitchen foil for 30 minutes, then uncovered for another 15 minutes.
Take the stuffed peppers with ground turkey out of the oven and leave to rest for 5 minutes before serving up!