Preheat the oven to 190°/375F/Gas Mark 5.
Remove the tomato stems and slice the large tomatoes in half. Peel and quarter the onions. Peel the garlic cloves and slice the peppers removing the seeds and white veins. Place the veggies cut side up in the roasting pans or baking trays.
1.5 kilograms tomatoes, 8-12 cloves garlic, 3 onions
Drizzle the olive oil over the veggies. Season with salt and pepper. Roast for 25 to 30 minutes.
½ cup olive oil, salt and pepper to taste
Place the vegetables into a large pot. Add the stock powder and 1 Litre of water. Bring to a simmer over medium heat. Allow the soup to simmer for about 30 minutes. Taste the soup about halfway through simmering to determine if the sugar is needed. If the soup is tasting a bit acidic add 1 to 2 tablespoons of sugar. Add in the miso once you have finished simmering the soup.
2 tablespoons white granulated sugar, 3 teaspoons vegetable stock powder, 1 -3 teaspoons miso
Using an immersion blender, carefully blitz the soup until you have reached the desired texture you are looking for. Serve with a side of croutons, some toast or even a grilled cheese sandwich!