Let Me Tell You Why This Roasted Tomato Basil Soup with Garlic is My Go-To
Ok, so here’s the thing: I started making this soup back when I first moved out on my own and realized—yikes—tinned tomato soup is nothing like what my mum used to make. One cold, drizzly Saturday, I tried roasting tomatoes with a heap of garlic for the first time… and maybe I went a bit overboard (the kitchen smelled like a pizza shop for days). But honestly, I never looked back. There’s something magic about the roasted, slightly caramelized flavor. Even when I accidentally char the edges (which, let’s be real, happens more often than I’ll admit), it still turns out delicious. And, if you’re like me and find yourself craving comfort food that feels a bit posh, this is your ticket. Also, I once dropped a whole pepper grinder into the blender—don’t do that. Learned my lesson there!
Why You’ll Love This Soup (At Least, I Do!)
I make this when the weather’s being a drama queen or when my family begs for something cozy (which is, suspiciously, every Sunday). It’s the kind of soup that disappears from the pot before I even sit down. My kids act like I’ve invented fire, and honestly, I think it’s just the garlic. Sometimes, I roast way more garlic than I need, then sneak some onto toasted bread. If you’ve ever been frustrated by watery soups (ugh, me too!), this one’s thick and silky, thanks to the roasted veg. Plus, if you’re feeling a bit fancy, swirl in some cream, or just eat it by the mug while watching telly. No judgments here.
What You’ll Need (But Feel Free to Improvise)
- 1.5 kg ripe tomatoes (Roma or vine work, but in winter, I’ve used cherry tomatoes—actually, they’re great!)
- 1 big head of garlic (yep, the whole thing—don’t be shy)
- 1 medium onion, roughly chopped (red or yellow, or even 2 shallots if that’s what you’ve got)
- 2–3 tbsp olive oil (I’m not precious, any will do—my gran swore by Spanish olive oil, but I just use what’s in the cupboard)
- Salt and pepper (I eyeball it; maybe a fat pinch of each)
- 1–2 handfuls fresh basil leaves (I’ve used a little frozen basil in a pinch—no shame)
- 700ml veggie stock (chicken works too, or even a cube dissolved in hot water when I can’t be bothered)
- Optional: 1 tsp sugar (if your tomatoes are a bit sour)
- Optional: splash of cream or milk (for swirling at the end, if you fancy)
How I Actually Make It (Warts and All)
- Prep the tomatoes and garlic: Cut your tomatoes in half and chuck them on a baking tray. Slice the top off the garlic head, drizzle with a little oil, wrap in foil. Toss the onion pieces in there, too. Splash everything with olive oil and sprinkle with salt and pepper. Give it a jiggle. (Don’t worry if it looks crowded. It’s fine.)
- Roast: Bake at 200°C (about 400°F) for 35–40 minutes. The tomatoes should look a little blistered, and the garlic goes all soft and golden. (This is when my dog starts loitering near the oven, hoping for scraps.)
- Squeeze and blend: Once it’s cool enough, pop the garlic cloves out of their skins. Into a blender they go, along with the tomatoes, onions, and any lovely roasting juices (don’t skip those—they’re liquid gold). Add most of your basil, then pour in the stock. Blitz until smooth. (This is where I sneak a cheeky taste—highly recommended.)
- Simmer: Pour the mix into a big saucepan. Bring it just to a simmer, not a frenzied boil. Taste and see if it needs more salt, pepper, or a pinch of sugar. If you like it silkier, go at it with a stick blender right in the pot. Or leave it a bit chunky—up to you.
- Finish: Swirl in cream if you want, or just scatter the rest of the basil on top. That’s it! (Don’t fret if it looks a bit pale before the cream—it brightens up.)
Little Discoveries I’ve Made (Aka Real Talk)
- If you use tomatoes that are a bit sad, just roast them longer, and nobody will know.
- Once I let the garlic roast too long, and it went almost black; actually, it was still tasty, but maybe stop before then.
- I’ve made this with tinned tomatoes in deepest winter—surprisingly decent! Just roast them with onions and garlic in a casserole dish.
Soup Experiments (Some Hits, One Miss)
- I’ve tried throwing in a roasted red pepper—absolutely brilliant. Adds sweet depth.
- One time I tossed in a bit of smoked paprika; it was fine, but honestly, I prefer it basil-forward.
- Tried coconut milk instead of cream—bit odd for me, but hey, maybe you’ll love it?
Do You Need Fancy Gear? (Probably Not)
I use a blender, but if you don’t have one—no stress. A stick blender or even a potato masher will do the trick for a rustic feel (which is code for slightly lumpy, but that’s fine!). And if you’re stuck with just a fork, well, you’ll get an arm workout.
How to Store the Soup (It Never Lasts Here!)
Pop leftovers in a lidded container and stick in the fridge for up to 3 days. You can freeze it, too, in batches—but, honestly, it vanishes so quick in my house, I rarely get the chance. If you do manage to save some, it reheats beautifully on the stove, just add a splash of water if it’s thickened up.
How We Serve It (And a Tangent About Cheese Toasties)
I’m partial to a hunk of crusty bread for dunking. Sometimes we go all out and make cheese toasties on the side—my youngest insists on adding Marmite (not for the fainthearted). Or, on a cold night, just pour into a mug and sip slowly. If it’s a fancier dinner, I’ll drizzle good olive oil on top and throw on a few extra basil leaves.
Things I’ve Messed Up (So You Don’t Have To)
- Once I tried blending everything while it was piping hot—hello, soup volcano! Let it cool a bit first.
- Rushing the roasting step? Don’t—undercooked tomatoes taste meh. Give them time to get properly sweet and jammy.
- Using too much stock makes it watery; actually, I find less is more, then top up if it needs loosening.
Questions People Have Actually Asked Me (And My Real Answers)
- Can I use dried basil? You can, but fresh is loads better. If you must, add just a sprinkle at the end. Or try frozen—it’s a good in-between.
- Do I have to peel the tomatoes? Honestly, I never do. The blender sorts it out. If you want it super smooth, you could sieve it, but who has time for that?
- Can I make this vegan? Absolutely, just skip the cream or use a splash of oat milk. Tastes grand.
- What bread goes best? Anything sturdy! Sourdough, a baguette, or even a basic supermarket bloomer. Find what you like. (I once used garlic naan—odd, but brilliant.)
- Where do you get your stock? Either homemade (when I can be bothered) or those big tubs from the grocery store. Bouillon cubes work fine too.
Oh, and if you want to geek out on tomato varieties, Serious Eats has a deep dive that’s worth a peek. Or, for some basil growing tips (trust me, having a pot by the window changes your life), check out the RHS guide.
That’s it—my slightly rambling, always honest guide to Roasted Tomato Basil Soup with Garlic. Hope you love it as much as we do. If you make it, tell me how it goes—or what you add to make it your own!
Ingredients
- 2 lbs ripe tomatoes, halved
- 4 cloves garlic, peeled
- 1 medium yellow onion, chopped
- 2 tablespoons olive oil
- 2 cups vegetable broth
- 1/2 cup fresh basil leaves, packed
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/2 cup heavy cream (optional)
Instructions
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1Preheat the oven to 400°F (200°C). Arrange the halved tomatoes and garlic cloves on a baking sheet. Drizzle with 1 tablespoon olive oil and sprinkle with salt and pepper.
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2Roast the tomatoes and garlic in the preheated oven for 25-30 minutes, until the tomatoes are soft and slightly caramelized.
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3In a large pot, heat the remaining olive oil over medium heat. Add the chopped onion and cook until translucent, about 5 minutes.
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4Add the roasted tomatoes, garlic, and any juices from the baking sheet to the pot. Pour in the vegetable broth and bring to a simmer. Cook for 10 minutes.
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5Stir in the fresh basil leaves. Use an immersion blender to puree the soup until smooth, or carefully blend in batches using a countertop blender.
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6Stir in the heavy cream if using, and adjust seasoning with additional salt and pepper to taste. Serve hot, garnished with extra basil if desired.
Approximate Information for One Serving
Nutrition Disclaimers
Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.
Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.
To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.
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