This roasted tomato basil soup has become a staple in my kitchen because it’s both simple to prepare and deeply satisfying. The aroma of tomatoes roasting with garlic fills the house and always signals comfort food on the way. I love serving it as a light lunch with crusty bread or as a starter for a cozy dinner.

What makes this soup special is the depth of flavor you get from roasting the tomatoes first. The edges caramelize slightly, adding a subtle sweetness and complexity you can’t get from simmering alone. The texture is smooth but still rustic enough to feel homemade.

I often make a big batch on weekends and enjoy the leftovers throughout the week. It’s versatile—great on its own, or topped with a swirl of cream or a sprinkle of parmesan. The fresh basil at the end brightens everything up.

This soup is also a go-to when I have extra tomatoes that need using up. It’s a practical way to turn simple ingredients into something that feels special, especially during tomato season.

Quick Facts

Why You’ll Love It

You’ll love this roasted tomato basil soup for its rich, layered flavor and straightforward prep. Roasting the tomatoes brings out their natural sweetness, while fresh basil adds a burst of brightness. This soup is comforting, adaptable, and perfect for making ahead.

• Deep, roasted tomato flavor
• Simple, pantry-friendly ingredients
• Naturally vegetarian and gluten-free
• Freezes well for future meals
• Easy to double for a crowd

Ingredients

The ingredients for this soup are straightforward and easy to find. Roasting the tomatoes, onion, and garlic together is key for building flavor. Use ripe tomatoes for the best results, and don’t skip the fresh basil at the end—it makes a big difference.

• 2 1/2 pounds ripe tomatoes (Roma or plum, halved)
• 1 medium yellow onion, peeled and quartered
• 5 cloves garlic, peeled
• 3 tablespoons olive oil
• Salt and freshly ground black pepper, to taste
• 2 cups vegetable broth (low sodium)
• 1 tablespoon tomato paste
• 1 teaspoon sugar (optional, to taste)
• 1/2 teaspoon dried oregano
• 1/2 cup fresh basil leaves, packed
• 1 tablespoon unsalted butter (optional, for richness)

Step-by-Step Instructions

This soup comes together in a few simple steps. Roasting the vegetables is mostly hands-off, and blending creates a smooth, velvety texture. You can use a regular blender or an immersion blender, depending on what you have.

1. Preheat oven to 425°F (220°C). Line a baking sheet with parchment paper.
2. Spread the halved tomatoes, onion quarters, and garlic cloves on the prepared sheet. Drizzle with olive oil and season generously with salt and pepper. Toss to coat.
3. Roast for 35–40 minutes, until tomatoes are soft and edges are caramelized.
4. Transfer roasted vegetables (and any juices) to a large pot. Add vegetable broth, tomato paste, sugar (if using), and oregano.
5. Bring to a simmer over medium heat. Cook for 10–15 minutes, stirring occasionally.
6. Add fresh basil leaves. Use an immersion blender to blend the soup until smooth (or carefully transfer to a blender in batches).
7. Taste and adjust seasoning. Stir in butter for extra richness, if desired.
8. Serve hot, garnished with extra basil or a drizzle of olive oil.

Chef Tips

A few simple tips can help you get the most out of this recipe. Roasting brings out the best in the tomatoes, but don’t be afraid to tweak the seasoning to your taste. Here’s how to make it even easier and tastier:

• Use very ripe tomatoes for the best flavor.
• Don’t skip the roasting step—it’s essential for depth.
• Add a pinch of sugar if your tomatoes are very acidic.
• Blend in a splash of cream for a richer soup.
• Garnish with parmesan or croutons for extra texture.

Substitutions

This soup is flexible if you need to make swaps. You can adjust the herbs or use canned tomatoes in a pinch. Here are some ideas to suit what you have on hand:

• Substitute canned whole tomatoes (drained) if fresh are out of season.
• Swap vegetable broth for chicken broth if not vegetarian.
• Use dried basil if fresh isn’t available (reduce to 1 tablespoon).
• Replace butter with more olive oil for a dairy-free version.
• Add a pinch of red pepper flakes for gentle heat.

Storage & Reheating

This soup keeps well, making it ideal for meal prep. Cool completely before storing, and reheat gently to preserve the fresh basil flavor. Here’s how to store and reheat it:

• Refrigerate in an airtight container for up to 4 days.
• Freeze for up to 3 months; thaw overnight in the fridge.
• Reheat gently on the stovetop, stirring occasionally.
• Add a splash of broth or water if the soup thickens after storing.

Perfect Pairings

This roasted tomato basil soup pairs well with a variety of sides and drinks. I often serve it with something to dip, or as a starter for a larger meal. Here are a few pairing ideas:

• Crusty sourdough or grilled cheese sandwich
• Simple green salad with vinaigrette
• Glass of Sauvignon Blanc or Pinot Grigio
• Roasted chicken or pan-seared fish

FAQs

Home cooks often have a few questions about making this soup. Here are answers to some of the most common ones, based on my experience:

Nutritional Note

Nutrition will vary, but one serving is approximately 150 calories, low in fat, and provides a good source of vitamin C and fiber. For detailed info, use a nutrition calculator.