Roasted Garlic Tomato Soup is a warm, comforting recipe made with ripe tomatoes, sweet roasted onion, mellow garlic, herbs, and vegetable broth. Roasting the vegetables first gives the soup a deeper, richer flavor than a basic stovetop tomato soup. The tomatoes become slightly caramelized around the edges, while the garlic turns soft, buttery, and naturally sweet.
This soup is smooth, cozy, and simple enough for an everyday lunch, yet flavorful enough to serve as a starter for dinner. A drizzle of olive oil, fresh basil, and a little Parmesan make the finished bowl look beautiful and add extra Mediterranean-style flavor.
Serve this Roasted Garlic Tomato Soup with crusty bread, grilled cheese, toasted sourdough, or a fresh green salad for a satisfying meal.
Ingredients
For the Tomato Soup
2 lb ripe tomatoes, halved, about 900 g
1 whole garlic bulb
1 small onion, quartered
2 tablespoons olive oil
2 cups vegetable broth, about 480 ml
1/2 teaspoon dried basil
Salt, to taste
Freshly ground black pepper, to taste
For Garnish, Optional
Fresh basil leaves
Freshly grated Parmesan cheese
A small drizzle of extra virgin olive oil
Extra black pepper
How to Make Roasted Garlic Tomato Soup
1. Prepare the Oven
Preheat your oven to 425°F or 220°C.
Line a large baking sheet with parchment paper. Using parchment paper makes cleanup easier and helps prevent the vegetables from sticking as they roast.
2. Prepare the Vegetables
Wash the tomatoes and cut them in half. Arrange them on the prepared baking sheet with the cut sides facing upward.
Peel the onion and cut it into quarters. Add the onion pieces around the tomatoes.
For the garlic, slice a small amount from the top of the entire bulb so the tops of the cloves are exposed. Keep the bulb intact and place it on the baking sheet.
Drizzle the tomatoes, onion, and garlic generously with the olive oil. Season everything with salt and freshly ground black pepper.
Try to spread the vegetables into a single layer so they roast rather than steam.
3. Roast Until Caramelized
Place the baking sheet in the preheated oven and roast for approximately 35–40 minutes.
The tomatoes should become very soft and slightly caramelized around their edges. The onion should be tender with a little golden color, while the garlic should become completely soft.
Roasting is one of the most important steps in this recipe because it concentrates the natural sweetness of the tomatoes and removes some of their excess moisture.
If your tomatoes are particularly juicy, they may need a few additional minutes.
4. Remove the Roasted Garlic
Allow the vegetables to cool for a few minutes so the garlic is safe to handle.
Gently squeeze the roasted garlic bulb from the bottom. The softened cloves should slide easily out of their skins.
Transfer the roasted garlic cloves to a blender.
Add the roasted tomatoes and onion along with any flavorful juices and olive oil left on the baking sheet.
5. Blend the Soup
Pour the vegetable broth into the blender and add the dried basil.
Blend everything until completely smooth and creamy.
Depending on the size of your blender, you may need to work in two batches. Be especially careful when blending hot ingredients. Allow steam to escape according to your blender manufacturer’s instructions.
For an extra-smooth soup, blend for a little longer or carefully pass the finished mixture through a fine-mesh strainer.
6. Simmer
Pour the blended tomato mixture into a medium saucepan or soup pot.
Place it over medium-low heat and bring it to a gentle simmer.
Cook for approximately 5–8 minutes, stirring occasionally. This short simmer helps the flavors come together and allows you to adjust the thickness.
If your Roasted Garlic Tomato Soup is thicker than you prefer, add a small splash of vegetable broth until it reaches your desired consistency.
Taste and adjust the salt and black pepper.
7. Garnish and Serve
Ladle the hot soup into individual bowls.
Top each serving with fresh basil leaves, a little grated Parmesan, freshly ground black pepper, and a light drizzle of olive oil.
Serve immediately while warm.
Tips for the Roasted Garlic Tomato Soup
Use the ripest tomatoes you can find. Roma tomatoes, vine-ripened tomatoes, plum tomatoes, or a mixture of different ripe varieties all work well.
Do not rush the roasting process. The slightly caramelized edges create much of the soup’s rich flavor.
Roasting an entire garlic bulb may sound like a lot of garlic, but roasted garlic is significantly sweeter and milder than raw garlic.
For a thinner soup, simply add more vegetable broth. For a thicker soup, simmer it uncovered for a few additional minutes.
If you prefer a creamy tomato soup, stir in a splash of heavy cream, half-and-half, or coconut milk after blending.
Fresh basil can also be blended into the soup for a stronger basil flavor, although adding it as a garnish keeps the flavor fresh and bright.
What to Serve With Roasted Garlic Tomato Soup
This soup is especially delicious with toasted sourdough bread or warm crusty bread for dipping.
A classic grilled cheese sandwich also pairs beautifully with its smooth tomato flavor.
For a lighter meal, serve it alongside a simple green salad, roasted vegetables, or a Mediterranean-style sandwich.
You can also serve smaller portions as an appetizer before pasta, roasted chicken, or a vegetable-based main course.
Storage and Reheating
Allow leftover soup to cool completely before transferring it to an airtight container.
Store it in the refrigerator for up to 4 days.
Reheat the soup gently in a saucepan over medium-low heat, stirring occasionally until completely hot. Add a splash of vegetable broth or water if it thickens during storage.
Roasted Garlic Tomato Soup can also be frozen. Place cooled soup in freezer-safe containers and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating.
Nutritional Info Per Serving
Serves approximately 4.
Calories: 185
Protein: 4 g
Carbohydrates: 22 g
Fat: 10 g
Fiber: 5 g
Sugar: 11 g
Sodium: 390 mg
Nutrition values are approximate and can vary depending on the tomatoes, broth, Parmesan, olive oil, and portion size used.
Final Note For Roasted Garlic Tomato Soup
Roasted Garlic Tomato Soup proves that a few simple ingredients can create incredible flavor. Roasting the tomatoes, onion, and whole garlic bulb transforms ordinary vegetables into a naturally sweet, savory, and deeply flavorful soup. Finished with fresh basil, Parmesan, and olive oil, every bowl is warming, smooth, and satisfying.
