Roasted Potato and Fennel Soup Recipe With Crispy Thyme Croutons

Please, set aside every other soup recipe and make this one again and again. This roasted potato and fennel soup is a keeper — comforting, rich, and surprisingly simple. The combination of roasted potatoes and fennel gives the soup a deep, savory flavor, while shallots, garlic, chicken stock, and milk add warmth and creaminess. Once blended, it becomes thick, velvety, and incredibly satisfying — a true hug in a bowl.

Fennel may be unfamiliar to some: raw, it has a mild licorice note, but when roasted that flavor softens and the vegetable contributes a sweet, aromatic depth. Roasting the potatoes and fennel concentrates their flavors and adds a caramelized richness that elevates this dish beyond a typical baked potato soup.

Roasting vegetables brings out wonderful complexity, and pairing those roasted vegetables with sautéed shallot and garlic creates a rounded base for the soup. Simmering the mixture briefly in chicken stock and milk allows the potatoes to finish cooking, then a quick puree with an immersion blender yields a smooth, luscious texture. Finish with salt and pepper to taste and, if you like, a sprinkle of Parmesan.

This recipe is easy to scale for guests and works well as a make-ahead dish—reheat gently so the milk doesn’t scald. The finished soup freezes well, too; thaw and rewarm slowly, adding a splash of milk or stock if needed to restore the creamy consistency.

This recipe is 7 Freestyle SmartPoints per serving.

Roasted Potato and Fennel Soup

img 4655 5
  • Author: Annie Chesson
  • Prep Time: 10 mins
  • Cook Time: 45 mins
  • Total Time: 55 minutes
  • Yield: 5 servings

Ingredients

  • 4 russet potatoes, peeled and diced
  • 1 bulb fennel, core removed and roughly diced
  • 3 teaspoons olive oil, divided
  • 1 shallot, sliced
  • 2 cloves garlic, minced
  • 2 cups chicken stock
  • 2 cups 2% milk

Instructions

  1. Preheat the oven to 425°F (220°C).
  2. Line a baking sheet with parchment. Spread the diced potatoes and fennel on the sheet, drizzle with 1 1/2 teaspoons olive oil, season with salt and pepper, and toss to coat evenly.
  3. Roast for 20 minutes, then toss the vegetables and roast for an additional 10 minutes until tender and lightly browned.
  4. Remove the pan from the oven and set the roasted vegetables aside.
  5. Heat a large pot over medium-high heat with the remaining 1 1/2 teaspoons olive oil. Add the shallot and garlic, season with salt and pepper, and cook until softened.
  6. Add the roasted potatoes and fennel, then pour in the chicken stock and milk. Stir to combine.
  7. Season with salt and pepper and bring the mixture to a gentle simmer. Avoid boiling to prevent scalding the milk.
  8. Simmer for a few minutes until the potatoes are very tender when pierced with a knife.
  9. Puree the soup with an immersion blender until completely smooth. If you don’t have an immersion blender, puree in batches in a regular blender or food processor.
  10. Taste and adjust seasoning with salt and pepper. Serve hot, topped with grated Parmesan if desired.

Notes

If you don’t have an immersion blender, puree the soup in batches using a regular blender or food processor, then return it to the pot and rewarm gently.

Potatoes need a fair amount of salt to bring out their flavor. If the soup tastes bland, add more salt in small increments until it’s well seasoned.

Nutrition

  • Serving Size: 1 cup
  • Calories: 223
  • Sugar: 8 g
  • Sodium: 121 mg
  • Fat: 5 g
  • Carbohydrates: 40 g
  • Fiber: 4 g
  • Protein: 8 g
  • Cholesterol: 8 mg

Did you make this recipe?

Share a photo and tag us — we can’t wait to see what you’ve made!

If you make this or any of my recipes, be sure to Instagram it and tag #thegarlicdiaries!

Looking for more soup ideas? Try Spicy Curried Carrot Soup, Creamy Chicken and Rice Soup, or Roasted Tomato Soup.