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Roasted Garlic Soup with Parmesan Crisps and Lemon Recipe

4.7 from 72 reviews

This creamy Roasted Garlic Soup is a comforting and flavorful dish featuring tender roasted garlic cloves blended with sautéed onions, herbs, and a touch of cream. Enhanced with Parmesan cheese and optional russet potato for extra body, it offers a velvety texture and rich taste. Garnished with lemon juice, Parmesan crisps, or toasted croutons, this soup makes for a warming appetizer or light meal perfect for garlic lovers.

Ingredients

Scale

Roasted Garlic:

  • 26 garlic cloves, peeled
  • 2 Tablespoons olive oil
  • Dash of salt and pepper

Soup Base:

  • 2 Tablespoons butter
  • 2 medium onions, sliced (about 2 generous cups)
  • 2 teaspoons chopped fresh thyme or ½ teaspoon dried thyme
  • 18 garlic cloves, smashed and peeled
  • 4 cups low-sodium chicken broth or vegetable broth
  • 1 large russet potato, cut into large chunks (optional, not peeled)
  • ½ cup whipping cream (or half and half, oat milk, or almond milk)
  • ½ teaspoon sea salt
  • ½ teaspoon freshly ground black pepper
  • 4 lemon wedges

Garnishes:

  • ½ cup finely grated Parmesan cheese
  • Toasted croutons, drizzled with oil, salt, and pepper, baked at 350°F until golden
  • 8 cloves fresh garlic, minced and sautéed just until fragrant in olive oil, dashed with pepper
  • Parmesan Crisps (recipe below)

Parmesan Crisps:

  • Grated Parmesan cheese (use a heaping tablespoon per crisp)
  • Optional: herbs, black pepper, or red pepper flakes for seasoning

Instructions

  1. Prepare Roasted Garlic: Preheat your oven to 350°F. Cut the bottom portion off the garlic bulbs where they attach to the base to help with peeling. Lightly smash the garlic cloves to loosen their skins and peel them. Place peeled cloves in a small glass baking dish; drizzle with 2 tablespoons of olive oil and season with salt and pepper. Toss to coat evenly. Cover tightly with a lid or foil and bake for about 45 minutes until garlic is golden brown and tender. Transfer the roasted cloves to a small bowl. You may prepare this a day ahead and refrigerate.
  2. Sauté Onions and Thyme: In a heavy, large saucepan, melt 2 tablespoons of butter over medium-high heat. Add the sliced onions and fresh thyme; cook until onions become translucent, approximately 5 minutes.
  3. Add Garlic: Stir in the roasted garlic and the 18 smashed raw garlic cloves. Cook for a couple of minutes to release the garlic oils and enhance flavor.
  4. Add Potato (Optional): If using, add the large chunks of russet potato to the pot.
  5. Simmer with Broth: Pour in the 4 cups of low-sodium chicken or vegetable broth. Cover the pot and let simmer for about 20 minutes until the garlic (and potato if used) are very tender.
  6. Make Parmesan Crisps (While Soup Simmers): Preheat your oven to 400°F. On a silicone or parchment-lined baking sheet, place a heaping tablespoon of grated Parmesan cheese and gently pat it down. Optionally sprinkle with herbs, black pepper, or red pepper flakes. Repeat spacing the mounds about ½ inch apart. Bake for 3 to 10 minutes until the cheese is golden and crisp. Let cool before removing from sheet.
  7. Puree Soup: If you included potato, remove the chunks and set aside. Working in batches, carefully blend the soup using a blender or immersion blender until smooth and creamy. Return the potato chunks to the pureed soup if used.
  8. Finish Soup: Place soup back on the stove over very low heat. Stir in the ½ cup of whipping cream or alternative milk and heat gently, avoiding boiling or curdling. Season with ½ teaspoon sea salt and ½ teaspoon freshly ground black pepper. Adjust seasoning to taste.
  9. Serve: Divide ½ cup of finely grated Parmesan cheese evenly across 4 bowls (about 2 tablespoons per bowl). Ladle the hot soup over the cheese.
  10. Add Lemon and Garnish: Squeeze the juice of one lemon wedge into each bowl to add brightness. Garnish with additional grated Parmesan, Parmesan crisps, toasted croutons, or the sautéed minced garlic for extra flavor and texture.

Notes

  • Roasted garlic can be prepared ahead of time and stored refrigerated for convenience and enhanced flavor.
  • The russet potato is optional but adds a creamier texture and body to the soup.
  • Alternative milks such as oat or almond milk can be used instead of cream for a lighter version.
  • Be careful when reheating after adding cream to avoid curdling; keep simmering very gentle and low heat.
  • Parmesan crisps add a delightful crunchy texture; experiment with seasoning them with herbs or chili flakes for a flavor twist.
  • Toasted croutons and sautéed garlic add contrasting textures and deepen the garlic flavor profile.

Keywords: roasted garlic soup, creamy garlic soup, garlic soup recipe, Parmesan garlic soup, comforting soup, garlic lovers recipe