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Roasted Fennel, Apple, and Potato Soup Recipe

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3.8 from 30 reviews

This Roasted Fennel Soup with Potatoes & Apple is a creamy and comforting vegetarian soup that combines the sweet, aromatic flavors of roasted fennel, apples, and onions with tender Yukon Gold potatoes. Roasting the vegetables enhances their natural sweetness, while the thyme and garlic create a fragrant base. Blended to a smooth, velvety texture, this soup is perfect for cozy lunches or dinners and can be easily adapted to your preferred seasoning and texture.

  • Total Time: 1 hour 5 minutes
  • Yield: 4 servings

Ingredients

Roasted Vegetables

  • 2 large fennel bulbs, sliced into 1/2-inch thick pieces (or 3 smaller bulbs)
  • 1 medium yellow onion, sliced
  • 1 large apple, chopped (Honeycrisp recommended)
  • 2 Tbsp olive oil
  • 2 tsp dried thyme
  • Salt and pepper, to taste

Sautéed Potatoes and Broth

  • 3 cloves garlic, minced
  • 2 small-medium Yukon Gold potatoes, peeled and chopped
  • 1 Tbsp olive oil
  • 1 Tbsp fresh thyme (optional, or substitute with additional dried thyme)
  • 1 liter vegetable broth (regular or low sodium, as preferred)
  • Salt and pepper, to taste

Instructions

  1. Prep: Preheat your oven to 400°F (200°C). Prepare the vegetables by slicing the fennel bulbs and onion, chopping the apple, peeling and chopping the potatoes, and mincing the garlic.
  2. Cook Veggies: Spread the sliced fennel, onion, and chopped apple on a large baking sheet. Toss them with 2 tablespoons of olive oil, 2 teaspoons of dried thyme, salt, and pepper to ensure even coating. Roast in the oven for 30-35 minutes, tossing halfway through, until the veggies are fork tender and lightly browned.
  3. Cook Potatoes: While the vegetables roast, heat the remaining 1 tablespoon of olive oil in a large pot over medium heat on the stovetop. Add the minced garlic, chopped potatoes, fresh thyme (or additional dried thyme), salt, and pepper. Cook for about 5 minutes, stirring frequently to soften the garlic and potatoes slightly.
  4. Add Broth: Pour the vegetable broth into the pot with the potatoes and bring the mixture to a boil. Once boiling, cover the pot, reduce the heat, and let the soup simmer for about 15 minutes, or until the potatoes are fork tender.
  5. Blend in Roasted Veg: Remove the roasted fennel, onion, and apple from the oven and transfer them into the pot with the simmered potatoes and broth. Using a handheld immersion blender, blend the mixture until it reaches a thick, creamy consistency. Alternatively, blend in batches with a high-speed blender until smooth. Taste and adjust the seasoning with salt and pepper as needed. Serve the soup hot for a warming meal.

Notes

  • For a smoother texture, use a high-speed blender; an immersion blender will leave some chunkiness.
  • You can substitute fennel with additional onions if unavailable, though the flavor will differ.
  • Use low sodium vegetable broth to better control salt levels.
  • Fresh thyme adds brighter flavor but dried thyme works well as a substitute.
  • This soup can be garnished with a drizzle of olive oil or fresh thyme for presentation.
  • Store leftovers in an airtight container in the refrigerator for up to 3 days or freeze for up to 1 month.
  • Author: Madelynn
  • Prep Time: 15 minutes
  • Cook Time: 50 minutes
  • Category: Soup
  • Method: Roasting and Stovetop
  • Cuisine: American
  • Diet: Vegetarian