Creamy Butternut Squash and Leek Soup with Crispy Prosciutto & Crème Fraîche: An Elegant Comfort Food Recipe
There’s something truly special about a steaming bowl of homemade soup, especially as the colder months set in or when you’re looking for a comforting yet elegant meal. It’s a culinary hug, a versatile dish that can be as simple or as sophisticated as you desire. For many, including myself, soup isn’t just a meal; it’s an experience, a delightful way to nourish the body and soul. What better way to welcome a new season or simply elevate a weeknight dinner than with a bowl of perfectly crafted soup?
This Butternut Squash and Leek Soup is a standout, boasting a luxurious creamy texture and rich flavor profile, all while remaining incredibly nutritious. It’s a harmonious blend of earthy sweetness from the butternut squash and the delicate, subtle onion notes from fresh leeks. The beauty of this recipe lies not only in its exceptional taste but also in its adaptability. For those seeking a vegetarian or vegan option, a simple swap of chicken stock for a high-quality vegetable broth makes it perfectly friendly for plant-based diets.
To truly elevate this dish and transform it from a simple soup into a gourmet experience, we add exquisite garnishes: a dollop of silky crème fraîche and shards of perfectly crispy prosciutto. These additions don’t just add visual appeal; they introduce layers of texture and flavor – a tangy creaminess and a salty, savory crunch – that make each spoonful an absolute delight. Whether you’re serving it as an impressive first course for a dinner party or a sophisticated main course, this soup promises to leave a lasting impression.
The Heartwarming Appeal of Butternut Squash and Leek Soup
Some ingredients are simply destined for soup, and butternut squash and leeks are undoubtedly a match made in culinary heaven. Butternut squash, with its vibrant orange flesh and inherent sweetness, is a champion for creating incredibly creamy soups without the need for excessive heavy cream. When roasted or simmered, it breaks down beautifully, yielding a smooth, velvety texture that forms the perfect base for this comforting dish. Beyond its delicious taste and texture, butternut squash is packed with vitamins, minerals, and fiber, making this soup a wholesome choice.
Leeks, often overshadowed by their more pungent onion cousins, bring a unique, delicate sweetness and mild onion flavor that complements the squash wonderfully. Unlike the sharpness of a standard onion, leeks offer an aromatic depth that is both nuanced and comforting. While a bit of yellow onion is still used in this recipe for foundational flavor, leeks truly shine when they are a primary ingredient, adding an understated elegance. Their gentle essence allows the other flavors to sing without being overpowered, contributing to the soup’s overall sophisticated profile.
Together, butternut squash and leeks create a symphony of flavors and textures. The natural sugars in the squash caramelize slightly during the initial sauté, deepening its sweetness, while the leeks soften to a buttery consistency, releasing their subtle aromatics. This combination is what makes this soup not just good, but truly exceptional – possibly one of the best soups you’ll ever create in your own kitchen.
Elevating Your Soup: The Magic of Crispy Prosciutto and Crème Fraîche
Garnishes are more than just an afterthought; they are the accessories of the culinary world, capable of transforming a simple dish into an extraordinary one. In the case of this butternut squash and leek soup, crispy prosciutto and a dollop of crème fraîche are non-negotiable elements that provide that essential ‘wow’ factor, adding both visual appeal and an unforgettable flavor and textural contrast.
Why Crispy Prosciutto?
Crispy prosciutto is a game-changer for this soup. Unlike bacon or pancetta, which can be quite smoky and robust, Italian prosciutto is paper-thin and possesses a more delicate, nuanced flavor. This makes it the ideal choice for garnishing a soup with equally delicate flavors, as it adds a salty, savory crunch without overpowering the squash and leeks. It’s also incredibly easy and quick to crisp up, making it a convenient last-minute addition.
How to Make Perfect Crispy Prosciutto:
Achieving perfectly crisp prosciutto is simpler than you might think. Lay individual slices of prosciutto di Parma on a baking sheet lined with parchment paper or foil. Ensure there’s a little space between each slice for even cooking. Bake in a preheated oven at 375°F (190°C) for approximately 15 to 20 minutes, flipping once halfway through. The prosciutto will darken in color and become wonderfully brittle. Once baked, transfer the crispy slices to a paper-towel-lined plate to absorb any excess oil, then let them cool slightly. You can serve them whole, broken into rustic pieces, or crumbled over each bowl of soup. For the best texture and flavor, prepare the crispy prosciutto just before serving.
The Role of Crème Fraîche
Crème fraîche, with its rich, slightly tangy profile, provides a luxurious counterpoint to the sweetness of the squash. It melts beautifully into the hot soup, adding a silken creaminess and a subtle acidity that brightens the overall flavor. If crème fraîche is unavailable, a good quality sour cream or even a swirl of coconut cream (for a vegan option) can offer a similar richness, though the unique tang of crème fraîche is truly unparalleled.
Crafting Your Perfect Bowl: Step-by-Step Guide
One of the many charms of this butternut squash and leek soup is how quickly it comes together – often in less than 45 minutes from start to finish. This makes it an ideal choice for a busy weeknight dinner, yet its elegant presentation ensures it’s equally suitable for special occasions. The process involves a few simple steps: sautéing the aromatics until sweet and tender, simmering the squash until fork-tender, and then blending it into a velvety smooth consistency. Each step is straightforward, guaranteeing a delicious result every time.
Key Ingredients Breakdown & Preparation Tips:
- Butternut Squash: Choose a squash that feels heavy for its size and has smooth, blemish-free skin. Peeling and chopping can be the most time-consuming part, but with a sharp vegetable peeler and a sturdy knife, it’s manageable. You can also look for pre-cut butternut squash in many grocery stores to save time.
- Leeks: Fresh leeks are essential. Remember to trim off the tough dark green tops and the root end, using only the white and light green parts. Leeks can harbor dirt between their layers, so slice them first, then rinse thoroughly in a colander under cold running water to remove any grit.
- Aromatics (Onion, Garlic, Thyme): These humble ingredients form the flavor backbone of the soup. Sautéing the onion and leeks slowly allows them to sweeten and become translucent, building a deep flavor foundation. Fresh thyme adds a wonderful herbaceous note that pairs beautifully with both squash and leeks.
- Broth: Low-sodium chicken or vegetable broth is crucial. Using low-sodium allows you to control the saltiness of the soup. As mentioned, for a vegetarian or vegan version, vegetable broth is the perfect substitute.
- Seasoning: Don’t be shy with salt and freshly ground black pepper; soups often require a generous hand to achieve a balanced flavor. A secret weapon for enhancing flavor and balancing sweetness in many soups is a touch of fresh lime juice. Its delicate acidity brightens the dish without adding a distinct “lime” flavor, making it a fantastic finishing touch. If you don’t have lime, a tiny squeeze of lemon can also work, but lime is often preferred for its milder profile.
Making it Vegetarian or Vegan:
As highlighted, adapting this soup for vegetarian and vegan diets is incredibly simple. Just replace the chicken stock with an equal amount of good quality vegetable broth. For the garnishes, omit the crispy prosciutto and crème fraîche. Instead, consider topping your vegan soup with toasted pumpkin seeds or chopped pecans for crunch, a swirl of full-fat coconut cream for richness, or a sprinkle of fresh herbs like chives or parsley for added freshness and color.
Storage, Make-Ahead & Serving Suggestions
This Butternut Squash and Leek Soup is not only quick to prepare but also wonderfully convenient for meal prepping. It holds up beautifully in the refrigerator for up to 3-4 days in an airtight container, and often tastes even better the next day as the flavors meld and deepen. For longer storage, the soup freezes exceptionally well for up to 2-3 months. Simply thaw overnight in the refrigerator and gently reheat on the stovetop, stirring occasionally. If the soup becomes too thick upon reheating, you can add a splash of extra broth or water to achieve your desired consistency. Remember to prepare the crispy prosciutto and add the crème fraîche fresh just before serving for the best experience.
Serving this soup offers a world of possibilities. It makes a delightful and elegant appetizer for any gathering. For a light lunch, pair it with a crisp green salad or a simple sandwich. When served as a main course, consider accompanying it with a hearty slice of crusty artisan bread for dipping, or a gourmet grilled cheese sandwich. Its versatility and satisfying nature make it a perfect addition to your culinary repertoire, sure to become a cherished recipe for many seasons to come.

Butternut Squash Leek Soup with Crispy Prosciutto and Creme Fraîche
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The soup is naturally thick and velvety, yet packed with nutrition and incredibly versatile. Easily adaptable for vegetarian and vegan diets by simply swapping chicken stock for vegetable broth and adjusting garnishes.
Equipment
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Vitamix 5200 Blender (or other high-powered blender)
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Large Soup Pot or Dutch Oven
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Baking Sheet and Parchment Paper (for prosciutto)
Ingredients
- 6 Prosciutto di Parma slices optional, for garnish
- 2 tablespoons extra virgin olive oil
- 2 tablespoons (30g) unsalted butter
- ½ medium yellow onion finely diced
- 2 large leeks white and light green parts only, thinly sliced, roughly 6 ounces (about 1.5 cups)
- 2 large garlic cloves finely minced
- 2 teaspoons finely chopped fresh thyme leaves about 3 to 4 sprigs
- 2½-3 lb whole butternut squash peeled, deseeded, and chopped into ¾-inch chunks (about 4-5 cups)
- 1 quart (4 cups; 960 mL) low-sodium chicken or vegetable broth
- kosher salt to taste
- freshly ground black pepper to taste
- 1 teaspoon fresh lime juice see recipe notes, optional but recommended
Garnishes:
- creme fraîche for dolloping
- Extra fresh thyme leaves or chives optional
Instructions
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1. Prepare the Crispy Prosciutto Slices: Preheat the oven to 375°F (190°C) with a rack in the center position. Line a half sheet pan with parchment paper or foil. Carefully lay the prosciutto slices flat onto the lined sheet pan, ensuring space between them. Bake the prosciutto for 15 to 20 minutes, flipping halfway, or until they are very crispy and have darkened in color. Keep a close eye on them, as thin prosciutto can crisp quickly. Place slices on a paper-towel lined plate to absorb any excess oil and set aside to cool while you finish preparing the soup. Once cooled, they can be broken into smaller pieces or crumbles.
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2. Make the Butternut Squash Leek Soup: In a large soup pot or Dutch oven, heat the olive oil and butter over medium-low heat until the butter just begins to bubble and sizzle slightly. Add the finely diced yellow onion and thinly sliced leeks, along with a generous pinch of salt. Stir to coat, then cover the pot and sauté over medium-low heat for 8 to 10 minutes, stirring every few minutes. Cook until the onions and leeks are very soft and translucent, almost melting. Uncover the pot, add the minced garlic and fresh thyme, and sauté for another 1 to 2 minutes, stirring constantly, until fragrant. Be careful not to burn the garlic.
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3. Simmer the Soup: Add the chopped butternut squash to the pot and sauté for an additional 2 to 3 minutes, allowing it to absorb the flavors. Pour in the low-sodium chicken or vegetable broth and bring the mixture to a boil. Once boiling, reduce the heat to low, cover partially, and let the soup simmer, uncovered, for 20 to 30 minutes, or until the butternut squash chunks are very tender and easily pierced with a fork.
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4. Blend and Finish: Carefully transfer the hot soup in batches to a high-powered blender, such as a Vitamix. Blend until the soup is completely smooth and velvety. (Exercise caution when blending hot liquids; ensure the blender lid is securely on and start at a low speed, gradually increasing.) Return the pureed soup to the pot and simmer for an additional 10 to 15 minutes to allow the flavors to further meld and for the soup to thicken slightly to your desired consistency. Season the soup generously to taste with kosher salt and freshly ground black pepper. Remember, soups often require a good amount of seasoning to be well-balanced. Finally, stir in the fresh lime juice (if using) – it adds a wonderful brightness.
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5. Serve: Ladle the soup piping hot into bowls. Garnish each serving with a piece or crumble of crispy prosciutto and a generous dollop of crème fraîche. A sprinkle of fresh thyme or chives can add an extra touch of elegance. Serve immediately and enjoy!
Tips for Success:
- Fresh Lime Juice: This is a secret weapon for many soups! A small amount of fresh lime juice at the end helps to brighten and balance the flavors without adding a distinct “lime” taste. It’s more delicate than lemon and can truly elevate your soup. If you don’t have it on hand, the soup will still be delicious, but try it if you can!
- Cleaning Leeks: Leeks can be quite sandy. After slicing, submerge them in a bowl of cold water and swish them around. The dirt will sink to the bottom. Lift the leeks out, leaving the dirt behind.
- Adjusting Consistency: If your soup is too thick, add a little extra broth or water until it reaches your preferred consistency. If it’s too thin, simmer it uncovered for a bit longer to allow some of the liquid to evaporate.
Whether you’re new to making homemade soups or a seasoned pro, this Butternut Squash and Leek Soup with Crispy Prosciutto and Crème Fraîche is a recipe worth adding to your repertoire. Its balanced flavors, luxurious texture, and elegant presentation make it a showstopper that’s deceptively easy to prepare. Embrace the warmth and comfort it brings, and savor every spoonful of this delightful culinary creation.