Preheat the oven to 180ºC. Spray the frying pan with low calorie cooking spray. Over a medium heat, sauté the onion, carrots, peppers and courgette, for 5 minutes until soft. Allow to cool for a couple of minutes.
While the vegetables are cooling, put all the ingredients for the glaze into a small bowl and mix well.
Place the turkey, breadcrumbs, garlic granules, oregano and egg into a large bowl.
Add the cooled vegetables and mix well. Season with salt and black pepper. You can check your seasoning by cooking a penny sized piece of the meatloaf mix in a frying pan, and add a little more if required.
Put the turkey mix on a baking sheet that has been sprayed with low calorie cooking spray and mould into a loaf shape, about 4cm deep.
Brush with the glaze.
Place in the preheated oven for 30-35 minutes.
When cooked, allow to rest for 5 minutes, before slicing and serving with your choice of accompaniments.