Place the tomatoes in a mixing bowl and puree with the hand blender. Peel and finely dice the onion. Peel garlic and press it through a garlic press. Melt fat in a pot, fry onion and garlic in it, dust with flour, add tomato paste, sweat it and deglaze with tomatoes and stock.
Bring the soup to the boil while stirring. Season to taste with salt, pepper, sugar, paprika and ketchup. Add tortelloni to the boiling soup and let it simmer for 1-2 minutes. Serve the soup in a tureen and sprinkle with coloured pepper and basil to taste