Cozy Roasted Tomato and Red Pepper Soup
There’s nothing quite like a bowl of roasted tomato and red pepper soup on a chilly afternoon. After testing this recipe five times, I finally got it just right — the tomatoes and peppers are charred in the oven until their sugars caramelise, creating a deep, smoky sweetness that no tin can replicate.
Recipe Overview
- Prep Time: 15 minutes
- Cook Time: 45 minutes
- Total Time: 1 hour
- Servings: 4–6
- Difficulty: Easy
Why You’ll Love This roasted tomato and red pepper soup
- Deep, roasted flavour: Roasting the vegetables draws out their natural sweetness and adds a gentle smokiness that you simply can’t get from simmering them raw.
- Silky texture without cream: The red peppers break down into a velvety smoothness, so you get a luscious mouthfeel without needing any dairy — perfect for lighter eating.
- One-pan roasting: Almost all the work happens on a single baking tray, which means minimal washing up and maximum flavour development.
- Freezer-friendly: This soup freezes beautifully, so I always make a double batch, just as I would with a batch of Cozy Butternut Squash Chili With Quinoa. It’s my go-to for busy weeknights when I need a nourishing meal in minutes.
- Naturally gluten-free and vegan: With no flour or butter, this soup suits almost every dietary requirement, making it a reliable choice for feeding a mixed group.
Ingredients You’ll Need
- 1 kg ripe tomatoes (plum or vine-ripened work best)
- 3 large red bell peppers
- 2 medium red onions, quartered
- 4 garlic cloves, skin on
- 3 tablespoons olive oil
- 1 teaspoon smoked paprika
- ½ teaspoon cayenne pepper (optional, for heat)
- 500 ml vegetable stock (or chicken stock for a richer flavour)
- 1 tablespoon tomato purée
- 1 tablespoon balsamic vinegar
- Salt and freshly ground black pepper, to taste
- Fresh basil leaves, for garnish (optional)
Tip: Use the ripest tomatoes you can find — the redder and juicier, the sweeter your finished soup will be. If fresh tomatoes are out of season, good-quality tinned whole tomatoes can be used, but reduce the roasting time by 10 minutes and skip the peeling step.
How to Make roasted tomato and red pepper soup
- Preheat the oven to 200°C (180°C fan) / 400°F / Gas Mark 6. Line a large baking tray with baking paper. Cut the tomatoes in half through the equator and arrange them cut-side up on the tray. Deseed the peppers and cut them into large flat pieces, then add them alongside the onion quarters and whole garlic cloves. Drizzle everything with the olive oil, sprinkle over the smoked paprika and cayenne, and season generously with salt and black pepper. Toss gently to coat — you should see the oil glistening on the vegetables.
- Roast for 40–45 minutes, turning halfway. After 20 minutes, the kitchen will fill with a sweet, toasty aroma and the edges of the peppers will begin to char. Give the tray a shake and turn the larger pieces so they colour evenly. By the end of the cooking time, the tomatoes should look collapsed and wrinkled, the peppers soft and deeply caramelised in patches, and the garlic skins papery and lightly browned. The onions will be tender and translucent at the centre.
- Remove from the oven and let everything cool for 5 minutes. This brief rest makes handling the garlic much safer — the cloves will be very hot and soft. Once cool enough to touch, squeeze the garlic cloves out of their skins into a large saucepan or Dutch oven. Add the roasted tomatoes, peppers and onions, scraping any sticky juices from the baking tray into the pan.
- Add the stock and tomato purée. Pour in the 500 ml of stock and stir in the tomato purée and balsamic vinegar. Bring to a gentle simmer over medium heat — you’ll see small bubbles breaking the surface. Cook for 5 minutes, stirring occasionally, to allow the flavours to meld. The liquid will turn a deep brick-red and the garlic will have completely dissolved.
- Blend until silky smooth. Remove the pan from the heat. Using a stick blender, whizz the soup directly in the pan until it is completely smooth — this takes about 1 minute. If you prefer an ultra-silky texture, pass the soup through a fine-mesh sieve, pressing the solids through with the back of a ladle. Taste and adjust seasoning with more salt, pepper or a splash of extra balsamic vinegar. The soup should be thick enough to coat the back of a spoon but still pourable.
- Serve hot, garnished with torn basil leaves and a drizzle of good olive oil. I like to ladle it into warmed bowls; the steam carries that gorgeous roasted fragrance right to your nose. For extra richness, add a swirl of coconut cream or a few toasted pumpkin seeds for crunch.
Tips From My Kitchen
- Don’t skip the balsamic vinegar. A single tablespoon might seem insignificant, but the acidity and slight sweetness it contributes lifts the entire soup, balancing the intense roasted flavours. Without it, the soup can taste flat. Add it at the simmering stage so it melds rather than remaining sharp.
- Char the peppers properly. Under-roasted peppers will taste grassy and a little bitter instead of sweet and smoky. Let them develop dark brown — almost black — patches on the skin. That charring is where the magic happens. If your oven runs cool, give them an extra 5 minutes without worry.
- Use a stick blender for convenience, but a countertop blender for ultimate smoothness. A stick blender is quick and leaves minimal mess, but if you own a high-speed blender, use it after the soup has cooled slightly — it will break down any fibrous pepper skins completely, giving you a restaurant-smooth consistency.
- Reserve some roasted vegetables before blending. If you like a chunkier soup, remove about a quarter of the roasted tomatoes and peppers before blending, then stir them back in after. This gives the soup a lovely rustic texture while still keeping a creamy base.
- Make it a meal with added protein. Stir in a drained tin of chickpeas or some shredded cooked chicken after blending — both work beautifully. For a heartier version, serve the soup over a spoonful of cooked quinoa or pearl barley. It’s become my go-to lunch when I have leftover Baked Salmon Recipe Healthy Dinner to use up.
Common Mistakes to Avoid
- Overcrowding the pan: If you pile the vegetables too closely on the baking tray, they steam rather than roast. The excess moisture prevents caramelisation, and you end up with pale, watery-tasting soup. Use two trays if necessary, and leave a little space between each piece so the hot air can circulate.
- Wrong temperature: Roasting at too low a temperature (below 180°C) dries out the vegetables without browning them. At 200°C, the sugars quickly caramelise while the interior stays moist. Conversely, roasting above 220°C risks burning the peppers and garlic before the tomatoes are tender.
- Skipping the rest time: Plunging hot vegetables straight into cold stock can cause the soup to seize slightly and dull the flavours. Letting them rest for 5 minutes allows the vegetables to settle and makes handling the garlic safe. It also gives you a moment to scrape up all the caramelised bits from the tray — that’s where the deepest flavour lives.
What to Serve With roasted tomato and red pepper soup
- A thick slice of sourdough toast, rubbed with a cut garlic clove and drizzled with olive oil
- Grilled cheese sandwiches (try a sharp cheddar or a melty mozzarella)
- A simple green salad with lemon vinaigrette to cut the richness
- For a more substantial meal, serve as a starter before Lamb Kofta Recipe Grilled Spiced or alongside Chipotle Chicken Bowl Recipe Spicy
Frequently Asked Questions
Can I use tinned tomatoes instead of fresh?
Yes, you can. Use two 400 g tins of whole peeled tomatoes, drained of most of their liquid. Spread them on the baking tray and roast for only 30 minutes, as they already have a softer texture. You won’t need to peel them, but the flavour will be slightly less caramelised than with fresh tomatoes.
How can I make the soup thicker?
If you prefer a thicker soup, reduce the stock to 350 ml, or add a handful of cooked white beans (such as cannellini) before blending. The beans will thicken the soup naturally without altering the flavour. Alternatively, simmer the blended soup for an extra 10 minutes to reduce the liquid.
Can I freeze this roasted tomato and red pepper soup?
Absolutely. Let the soup cool completely, then transfer it to airtight containers or freezer bags. It will keep for up to three months. Thaw overnight in the fridge and reheat gently on the hob — you may need to add a splash of water or stock to loosen the consistency as it thickens slightly after freezing.
What if I don’t have a blender?
No problem. You can use a potato masher or a food mill to break down the roasted vegetables. The soup will be rustic and chunky rather than silky, but it will still taste wonderful. For a smoother result, push the soup through a sieve using the back of a spoon.
Can I add dairy to this soup?
Certainly. For a creamier version, stir in 100 ml of double cream or crème fraîche after blending. You can also add a knob of butter at the same stage for extra richness. If you keep the soup dairy-free, a swirl of coconut cream works beautifully and adds a subtle tropical note that complements the peppers.
roasted tomato and red pepper soup
A comforting and flavourful soup made from oven-roasted tomatoes, red bell peppers, onions, and garlic, blended until silky smooth. Perfect as a starter or light main course.
Ingredients
Method
-
Preheat the oven to 200°C (180°C fan) / 400°F / Gas Mark 6. Line a large baking tray with baking paper. Cut the tomatoes in half through the equator and arrange them cut-side up on the tray. Deseed the peppers and cut them into large flat pieces, then add them alongside the onion quarters and whole garlic cloves. Drizzle everything with the olive oil, sprinkle over the smoked paprika and cayenne, and season generously with salt and black pepper. Toss gently to coat — you should see the oil glistening on the vegetables.
-
Roast for 40–45 minutes, turning halfway. After 20 minutes, the kitchen will fill with a sweet, toasty aroma and the edges of the peppers will begin to char. Give the tray a shake and turn the larger pieces so they colour evenly. By the end of the cooking time, the tomatoes should look collapsed and wrinkled, the peppers soft and deeply caramelised in patches, and the garlic skins papery and lightly browned. The onions will be tender and translucent at the centre.
-
Remove from the oven and let everything cool for 5 minutes. This brief rest makes handling the garlic much safer — the cloves will be very hot and soft. Once cool enough to touch, squeeze the garlic cloves out of their skins into a large saucepan or Dutch oven. Add the roasted tomatoes, peppers and onions, scraping any sticky juices from the baking tray into the pan.
-
Add the stock and tomato purée. Pour in the 500 ml of stock and stir in the tomato purée and balsamic vinegar. Bring to a gentle simmer over medium heat — you’ll see small bubbles breaking the surface. Cook for 5 minutes, stirring occasionally, to allow the flavours to meld. The liquid will turn a deep brick-red and the garlic will have completely dissolved.
-
Blend until silky smooth. Remove the pan from the heat. Using a stick blender, whizz the soup directly in the pan until it is completely smooth — this takes about 1 minute. If you prefer an ultra-silky texture, pass the soup through a fine-mesh sieve, pressing the solids through with the back of a ladle. Taste and adjust seasoning with more salt, pepper or a splash of extra balsamic vinegar. The soup should be thick enough to coat the back of a spoon but still pourable.
-
Serve hot, garnished with torn basil leaves and a drizzle of good olive oil. I like to ladle it into warmed bowls; the steam carries that gorgeous roasted fragrance right to your nose. For extra richness, add a swirl of coconut cream or a few toasted pumpkin seeds for crunch.
Notes
For an ultra-silky texture, pass the soup through a fine-mesh sieve after blending. For extra richness, add a swirl of coconut cream or a few toasted pumpkin seeds for crunch when serving. Adjust seasoning with more salt, pepper, or balsamic vinegar to taste.
I make this at least once a week — it’s become a family favourite. We love how the flavour deepens overnight, so leftovers taste even better the next day. If you give this recipe a try, I’d love to hear how it turned out for you. Leave a comment below and let me know what you served it with, or if you added your own twist. Happy cooking!
