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On a chilly winter evening, nothing warms the soul quite like a hearty bowl of Nonna’s Lentil, Fennel & Celery Soup. I discovered this cherished family recipe tucked away in my grandmother’s well-worn cookbook, and its comforting embrace has become a staple in my kitchen. The moment you bring this soup to a simmer, your home will be filled with the enticing aroma of fennel and spices, instantly brightening even the gloomiest of days.

What I love most about this dish is its effortless versatility; whether you prefer it vegan, gluten-free, or loaded with protein, it easily adapts to fit your dietary needs. Plus, with its light yet satisfying texture, this soup is the perfect antidote to fast-food fatigue. Trust me—once you share a bowl of this nourishing comfort with loved ones, they’ll be asking for seconds! Grab a few simple ingredients and let’s dive into creating this culinary hug for your heart.

Why Love Nonna’s Lentil, Fennel & Celery Soup?

Comforting Flavor: The unique combination of lentils, fennel, and celery gives this soup a rich, savory profile that warms every bite.

Healthy & Wholesome: Packed with protein and fiber, it’s a nutritious option that fills you up without weighing you down.

Effortless Cooking: With minimal prep and just one pot needed, you can whip this dish up in no time, making it perfect for busy weeknights.

Customizable: Whether you’re vegan, gluten-free, or want to add your own flair, this soup easily adapts to your preferences, pleasing all palates at the table.

Meal Prep Friendly: Batch cook and enjoy leftovers throughout the week, ensuring you’ll always have a cozy meal ready to go.

Family Favorite: Sharing this soup with loved ones not only nourishes the body but creates wonderful memories, making it a staple for every home chef.

Nonna’s Lentil, Fennel & Celery Soup Ingredients

For the Soup

Lentils – A great source of protein and texture; choose red or green for creaminess.
Celery – Offers an aromatic flavor; don’t forget to use both the stems and leaves for extra nutrients.
Fennel – Delivers a sweet, anise-like taste; use the bulb and feathery tips for maximum flavor.
Onion – Enhances sweetness and depth; finely slice for even cooking.
Fennel Seeds – Infuse the soup with authentic fennel essence; adjust to your preference.
Cracked Black Pepper – Adds heat and depth; use freshly cracked for the best flavor.
Dried Italian Herbs – Season to elevate the dish; oregano and thyme are perfect choices.
Filtered Water – The base of the broth; ensures a clean, delicious taste.
Flat-leaf Parsley – Adds freshness and a pop of color to the dish.
Cold-pressed Olive Oil – Adds richness; choose high-quality oil for best results.
Salt – Boosts overall flavor; adjust to fit your taste.

Optional Add-ins

Angel-hair Noodles – Stirring in cooked noodles adds heartiness; a delightful variation to enjoy.
Protein Boost – For a non-vegan version, add cooked chicken or sausage as a tasty option.

How to Make Nonna’s Lentil, Fennel & Celery Soup

Combine Ingredients: In a large saucepan, mix lentils, celery, fennel, onion, fennel seeds, cracked pepper, Italian herbs, and water. Bring to a boil over medium heat, letting the fragrant aromas fill your kitchen.
Simmer: Lower the heat and allow the mixture to simmer for about 50 minutes. You’ll know it’s ready when the lentils and vegetables are tender and softened, creating a comforting texture.
Finish Soup: Add the flat-leaf parsley 5 minutes before serving to infuse its fresh flavor into the soup. Stir in the olive oil and taste to adjust salt as necessary for maximum flavor.
Serve: Ladle the soup into warm bowls, serving it hot alongside extra salt and cracked black pepper for an added kick if desired.

Optional: Drizzle with an extra splash of olive oil for a richer taste.
Exact quantities are listed in the recipe card below.

What to Serve with Nonna’s Lentil, Fennel & Celery Soup?

On a cozy evening, pairing the nourishing warmth of this soup with delightful sides can elevate your meal to new heights.

Crusty Bread: A warm, freshly baked loaf is perfect for dipping into the flavorful broth, soaking up every last drop.
Simple Green Salad: A light salad with arugula or mixed greens balances the heartiness of the soup while adding a refreshing crunch.
Roasted Vegetables: Seasonal roasted veggies bring a touch of sweetness and enhance the earthiness of the lentils, creating a harmony of flavors.
Herbed Couscous: Fluffy couscous infused with herbs adds a light, fluffy texture that pairs beautifully with the comforting soup.
Garlic Breadsticks: Soft, buttery breadsticks incorporate a garlicky richness that complements the fragrant notes of fennel in the soup.

For a sweet ending, enjoy a slice of Lemon Tart. Its zesty brightness provides a perfect contrast to the warm, savory soup, leaving you with a memorable meal.

Variations & Substitutions for Nonna’s Lentil, Fennel & Celery Soup

Feel free to make this beloved soup your own with these delightful twists and swaps!

Pasta Addition: Stir in cooked angel-hair noodles for a more filling meal, creating a heartwarming and cozy dish. This boosts both texture and comfort.
Protein Boost: Add cooked chicken or sausage for a non-vegan version. This hearty addition will elevate the soup and satisfy even the hungriest of diners.
Herb Swaps: Adjust the herbs based on availability; fresh dill or basil could complement the flavors wonderfully. Experimenting with herbs can lead to delightful surprises!
Creamy Texture: Blend a portion of the soup to create a smooth, creamy base while keeping some chunks for texture. This adds depth and richness to each spoonful.
Spicy Kick: Incorporate a pinch of red pepper flakes for those who crave a little heat. This twist will awaken your taste buds and add a fun zing!
Vegetable Variations: Toss in other vegetables like carrots, spinach, or kale for added nutrition and variety. Each vegetable brings its unique flavor and texture to the soup.
Coconut Milk: For a creamy, tropical twist, stir in a can of coconut milk. This addition offers a subtle sweetness and a luxurious mouthfeel.
Smoked Flavor: Add a dash of smoked paprika or a touch of liquid smoke for a unique, smoky depth that beautifully complements the fennel. It’ll transport your taste buds to a cozy campfire night!

Expert Tips for Nonna’s Lentil, Fennel & Celery Soup

Ingredient Freshness: Use fresh produce and herbs for the best flavor. Dried herbs can lose potency over time, impacting your soup’s taste.
Perfect Texture: Avoid mushy lentils by checking them a few minutes before the recommended cooking time. You want them tender but not falling apart.
Customize Seasoning: Taste as you cook! Adjust salt and pepper gradually to suit your personal preferences, ensuring your Nonna’s Lentil, Fennel & Celery Soup is just how you like it.
Freezing Tips: To freeze, let the soup cool completely before transferring to airtight containers. This ensures the best flavor and texture when reheating later.
Experiment with Variations: Don’t hesitate to try different spices or add-ins. A sprinkle of smoked paprika or a dollop of pesto can take your soup to a whole new level!

How to Store and Freeze Nonna’s Lentil, Fennel & Celery Soup

Fridge: Store in airtight containers for up to 5 days. This hearty soup tastes even better as the flavors meld!

Freezer: Freeze in portions for up to 3 months. Allow the soup to cool completely before transferring to prevent freezer burn.

Reheating: To reheat, thaw overnight in the fridge, then warm gently on the stovetop until heated through. Stir in a little water if needed for desired consistency.

Leftovers: Making this comforting soup is great for batch cooking, ensuring you have a nourishing meal ready to enjoy anytime!

Make Ahead Options

These Nonna’s Lentil, Fennel & Celery Soup components are perfect for meal prep, saving you time on busy weeknights! You can chop the vegetables (celery, fennel, and onion) and store them in an airtight container in the refrigerator for up to 3 days. Additionally, you can cook the lentils and freeze them along with the prepared broth for up to 1 month. When you’re ready to enjoy your soup, simply combine the prepped ingredients in a pot, bring to a simmer, add the parsley and olive oil, and adjust salt to taste. This way, your comforting bowl of Nonna’s Lentil, Fennel & Celery Soup is just as delicious as if made fresh!

Nonna’s Lentil, Fennel & Celery Soup Recipe FAQs

How do I choose the right lentils for Nonna’s Lentil, Fennel & Celery Soup?
Absolutely! For this soup, both red and green lentils work wonderfully. Red lentils tend to break down and create a creamier texture, while green lentils hold their shape better. I personally enjoy using a mix of both for a delightful contrast in texture.

What are the best storage methods for leftover soup?
Very! Store your Nonna’s Lentil, Fennel & Celery Soup in airtight containers in the fridge for up to 5 days. Make sure the soup is completely cooled before sealing it to maintain its flavor. You’ll love how the flavors improve over a day or two!

Can I freeze Nonna’s Lentil, Fennel & Celery Soup?
Certainly! To freeze, let the soup cool completely, then portion it into freezer-safe airtight containers or bags. Aim to use it within 3 months for the best quality. When you’re ready to enjoy it, simply thaw overnight in the fridge and reheat on the stovetop, adding a splash of water if needed to reach your desired consistency.

What should I do if my soup turns out too thick?
If your soup is thicker than desired, don’t worry! Just stir in some additional filtered water or vegetable broth and heat gently until it reaches your preferred consistency. Taste and adjust the seasonings afterwards, as adding liquid can dilute the flavors a bit!

Is there anything to be cautious about with allergies in this recipe?
Definitely! This soup is vegan and gluten-free, making it safe for a variety of dietary restrictions. However, always check ingredient labels for any hidden allergens, especially with pre-packaged herbs or stocks. If making for pets, ingredients like onions and garlic are toxic to them, so be sure to keep the soup safe away from furry friends.

How can I customize the flavors in the soup?
The more the merrier! Feel free to swap in your favorite herbs or spices. For instance, fresh dill or basil can bring a delightful freshness. Additionally, if you like a bit of heat, add a pinch of red pepper flakes or a dash of hot sauce for a spicy kick. Enjoy experimenting!