If you have ever eaten a clove of roasted garlic straight from the bulb, you know the magic: the sharp bite disappears and something jammy, sweet, and almost buttery takes its place. This soup is that flavor, multiplied by three heads of garlic and simmered into a velvety broth that tastes like a warm hug for anyone who hoards garlic in the pantry.
The trick is roasting the garlic low and slow until the cloves turn golden and collapse out of their papery skins. That caramelization does all the heavy lifting, so you only need a handful of supporting players: onion, thyme, a splash of white wine, and a little cream to round it out.
The result is a soup that feels elegant enough for a dinner party but comes together on a weeknight with about 15 minutes of hands-on work. Serve it with crusty bread and a drizzle of olive oil and watch garlic lovers go quiet at the table.
Why You'll Love This Recipe
About the Ingredients
3 whole heads garlic (about 45 cloves), tops sliced off to expose cloves
Look for firm, heavy heads with tight papery skins; loose or sprouting garlic will taste bitter. If you're short on time, 1 1/2 cups of peeled cloves from a jar work but roast in about 25 minutes instead of 40.
3 tablespoons olive oil, divided
Use a good everyday extra-virgin olive oil for roasting and finishing. Avocado oil is a fine neutral substitute if you prefer a higher smoke point.
1 large yellow onion (about 2 cups), roughly chopped
Yellow onion gives the sweetest base; sweet or white onion can stand in. Skip red onion, which turns the soup an unappealing gray-purple.
2 tablespoons unsalted butter
Butter adds richness and helps the onion caramelize. For a dairy-free version, swap in 2 more tablespoons of olive oil.
1/4 cup dry white wine (or 2 tablespoons dry vermouth)
Pinot Grigio or Sauvignon Blanc works well; avoid anything oaky or sweet. No wine? Use 1/4 cup broth plus 1 teaspoon lemon juice.
4 cups low-sodium vegetable or chicken broth
Low-sodium lets you control the seasoning at the end. Homemade stock is ideal; if using bouillon, use half the amount and taste before adding salt.
4 sprigs fresh thyme (or 1/2 teaspoon dried)
Fresh thyme complements roasted garlic beautifully; 1 teaspoon dried oregano is a good substitute. Tie fresh sprigs with kitchen twine for easy removal.
1/2 cup heavy cream (or full-fat coconut milk)
Heavy cream gives the silkiest body; coconut milk makes it dairy-free with a subtle sweetness. Half-and-half works but is slightly thinner.
1 teaspoon kosher salt, plus more to taste
Kosher salt is less salty by volume than table salt, so adjust if substituting. Add in stages since broth sodium varies.
1/4 teaspoon freshly ground black pepper
Fresh-cracked pepper blooms in the hot soup. A pinch of white pepper keeps the color pristine if you're serving to company.
Crusty bread and olive oil, for serving (optional)
A torn baguette or sourdough is perfect for dunking. Garlic-rubbed toast takes it over the top.
Tips & Tricks
Don't rush the roast
Garlic needs 40 minutes at 400°F (200°C) to turn truly jammy; pulling it early leaves a raw, sharp edge that no amount of cream can fix.
Squeeze, don't dig
Let the roasted heads cool for 10 minutes, then squeeze from the root end so the cloves pop out whole and no papery bits end up in the soup.
Blend in batches and vent
Hot soup expands in a blender, so fill it only halfway and crack the lid for steam, or use an immersion blender right in the pot to avoid a mess and a burn.
Season after blending
Cream and roasted garlic both mute salt, so taste and adjust at the very end rather than salting the broth early.
Pro Tips
Step-by-Step Instructions
1. Heat the oven
Preheat the oven to 400°F (200°C) and line a small baking dish with parchment paper.
2. Prep the garlic
Slice the top quarter off each garlic head so the cloves are exposed, drizzle with 1 tablespoon olive oil, and wrap each head loosely in foil. Roast for 40 minutes until the cloves are deep golden and a knife slides in with no resistance.
3. Squeeze the cloves
Let the garlic cool for 10 minutes, then squeeze the soft cloves out of their skins into a bowl, discarding the papery husks.
4. Soften the onion
Melt the butter with the remaining 2 tablespoons olive oil in a large pot over medium heat. Add the onion and cook for 8 minutes, stirring occasionally, until soft and translucent with golden edges.
5. Deglaze the pot
Pour in the white wine and scrape up any browned bits from the bottom. Simmer for 2 minutes until the wine smells mellow and the liquid has nearly evaporated.
6. Simmer the soup
Add the roasted garlic, broth, thyme, salt, and pepper. Bring to a boil, then reduce to a simmer and cook uncovered for 15 minutes until the flavors meld and the liquid reduces slightly.
7. Blend until silky
Remove the thyme sprigs, then blend with an immersion blender until completely smooth, about 1 minute, or transfer in batches to a countertop blender.
8. Finish with cream
Stir in the heavy cream and warm over low heat for 3 minutes until steaming but not boiling. Taste and adjust salt and pepper, then ladle into bowls and serve with crusty bread.
Delicious Variations
Potato Garlic Soup
Add 1 peeled and diced russet potato with the broth and simmer 20 minutes before blending for a heartier, thicker soup.
Roasted Garlic Tomato Soup
Stir in one 14-ounce can of crushed tomatoes before simmering for a tangy, rosy twist that pairs beautifully with grilled cheese.
Spicy Chili-Garlic Soup
Add 1/2 teaspoon red pepper flakes with the onion and finish with a swirl of chili oil for a warming kick.
How to Store Roasted Garlic Soup
Refrigerator
Store cooled soup in an airtight container for up to 4 days; the flavor deepens overnight.
Freezer
Freeze in portions for up to 3 months; cream-based soups can separate slightly, so whisk well after thawing.
Reheating
Reheat gently over medium-low heat, stirring often, and add a splash of broth or cream if it has thickened too much.
Frequently Asked Questions
Q: Is roasted garlic soup very garlicky?
No, roasted garlic soup is surprisingly mellow and sweet rather than pungent. Roasting caramelizes the sugars in the garlic and tames its sharp compounds, so three whole heads taste rich and nutty, not overwhelming.
Q: Can I make roasted garlic soup without cream?
Yes, you can skip the cream or swap in full-fat coconut milk for a dairy-free version. For extra body without dairy, blend in a small cooked potato or a handful of raw cashews soaked in hot water for 10 minutes.
Q: How do I roast garlic for soup?
Slice off the top of each head, drizzle with olive oil, wrap in foil, and roast at 400°F (200°C) for 40 minutes until the cloves are golden and soft. Squeeze the cloves from their skins once cool enough to handle.
Q: Can I use pre-peeled garlic to save time?
Yes, you can roast peeled garlic cloves in a foil packet with olive oil, but reduce the time to about 25 minutes. Watch closely, since peeled cloves brown faster and can scorch at the edges.
Q: What should I serve with roasted garlic soup?
Crusty bread or garlic-rubbed toast is the classic pairing for dipping and soaking up every drop. A simple green salad, roasted vegetables, or a grilled cheese sandwich also round it into a full meal.
If you make this roasted garlic soup, I'd love to hear how it turned out! Leave a comment below, rate the recipe, and tag me in your photos so I can see your bowls. Happy roasting, garlic lovers!
Roasted Garlic Soup
Roasted Garlic Soup turns three whole heads of garlic into a silky, sweet, mellow bowl of comfort that's rich in flavor and surprisingly gentle on the palate.
🧂 Ingredients
- 3 whole heads garlic (about 45 cloves), tops sliced off to expose cloves
- 3 tablespoons olive oil, divided
- 1 large yellow onion (about 2 cups), roughly chopped
- 2 tablespoons unsalted butter
- 1/4 cup dry white wine (or 2 tablespoons dry vermouth)
- 4 cups low-sodium vegetable or chicken broth
- 4 sprigs fresh thyme (or 1/2 teaspoon dried)
- 1/2 cup heavy cream (or full-fat coconut milk)
- 1 teaspoon kosher salt, plus more to taste
- 1/4 teaspoon freshly ground black pepper
- Crusty bread and olive oil, for serving (optional)
📋 Instructions
- 1Heat the oven — Preheat the oven to 400°F (200°C) and line a small baking dish with parchment paper.
- 2Prep the garlic — Slice the top quarter off each garlic head so the cloves are exposed, drizzle with 1 tablespoon olive oil, and wrap each head loosely in foil. Roast for 40 minutes until the cloves are deep golden and a knife slides in with no resistance.
- 3Squeeze the cloves — Let the garlic cool for 10 minutes, then squeeze the soft cloves out of their skins into a bowl, discarding the papery husks.
- 4Soften the onion — Melt the butter with the remaining 2 tablespoons olive oil in a large pot over medium heat. Add the onion and cook for 8 minutes, stirring occasionally, until soft and translucent with golden edges.
- 5Deglaze the pot — Pour in the white wine and scrape up any browned bits from the bottom. Simmer for 2 minutes until the wine smells mellow and the liquid has nearly evaporated.
- 6Simmer the soup — Add the roasted garlic, broth, thyme, salt, and pepper. Bring to a boil, then reduce to a simmer and cook uncovered for 15 minutes until the flavors meld and the liquid reduces slightly.
- 7Blend until silky — Remove the thyme sprigs, then blend with an immersion blender until completely smooth, about 1 minute, or transfer in batches to a countertop blender.
- 8Finish with cream — Stir in the heavy cream and warm over low heat for 3 minutes until steaming but not boiling. Taste and adjust salt and pepper, then ladle into bowls and serve with crusty bread.