Preheat oven to 200°C fan / 425°F.
Trim and deseed the peppers. Then cut into strips.
Transfer the sliced peppers to a baking tray and add the tomatoes. Coat with a small amount of olive oil, then roast in preheated oven for 12 minutes.
Remove the roasted veggies from the oven and blend in a blender with the remaining ingredients.
Transfer to a bowl to serve.