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Velvety Roasted Garlic Soup with Gruyère Croutons

A spoonful of creamy garlic soup dripping back into a white bowl topped with golden, herb-seasoned croutons.
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This recipe translates the rich, comforting flavors of French country cooking into a simple, velvety soup using slow-roasted garlic for deep sweetness. You get gourmet flavor with easy, weeknight execution.

Ingredients

Scale
  • 3 large heads of garlic
  • 2 tablespoons olive oil, plus more for drizzling
  • 1 large yellow onion, chopped
  • 4 cups low-sodium chicken or vegetable broth
  • 2 large Yukon Gold potatoes, peeled and diced
  • 1 teaspoon fresh thyme leaves
  • 1/2 cup heavy cream (or full-fat coconut milk for a dairy-free version)
  • Salt and freshly ground black pepper to taste
  • 4 slices crusty bread, cut into 1-inch cubes
  • 1 cup shredded Gruyère cheese
  • 1 tablespoon unsalted butter

Instructions

  1. Preheat your oven to 400°F (200°C). Slice the top quarter off each garlic head to expose the cloves. Drizzle the exposed cloves with a little olive oil, wrap the heads loosely in foil, and roast for 30 to 40 minutes until the garlic is soft and caramelized. Let cool slightly.
  2. While the garlic roasts, prepare the croutons. Toss the bread cubes with 1 tablespoon of olive oil, salt, and pepper. Spread on a baking sheet and toast in the oven for 5 to 8 minutes until golden brown. Remove and set aside.
  3. In a large pot or Dutch oven, heat 2 tablespoons of olive oil over medium heat. Add the chopped onion and cook until softened, about 5 minutes. Do not let it brown.
  4. Squeeze the soft, roasted garlic pulp from the skins directly into the pot. Stir to combine with the onions.
  5. Pour in the broth, add the diced potatoes and thyme. Bring the mixture to a boil, then reduce the heat, cover, and simmer for 15 to 20 minutes, or until the potatoes are completely tender.
  6. Remove the pot from the heat. Use an immersion blender to blend the soup until it is completely smooth and velvety. Alternatively, carefully transfer the soup in batches to a standard blender and blend until smooth, then return it to the pot.
  7. Stir in the heavy cream (or coconut milk). Heat gently over low heat, but do not boil. Season generously with salt and pepper. This is where you adjust the flavor profile.
  8. To serve, ladle the hot soup into bowls. Top each serving with the Gruyère cheese and the toasted croutons. Serve immediately.

Notes

  • For the Gruyère croutons, you can melt the cheese over the bread cubes under the broiler for 1-2 minutes until bubbly before adding them to the soup.
  • If you want a richer flavor, substitute half the broth with dry white wine and let it reduce by half before adding the potatoes.
  • This soup freezes well before adding the cream; stir the cream back in when reheating.

Nutrition

Find it online: https://kitchenslang.com/easy-roasted-garlic-soup-recipe/