This Italian Sausage and Spinach Soup is a deeply comforting one-pot meal that comes together quickly. It features a savory broth with hearty sausage and fresh spinach for a satisfying, rustic dinner. The aroma of fennel, garlic, and herbs makes this Italian Sausage and Spinach Soup a true weeknight hero.
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Why You’ll Love This Italian Sausage and Spinach Soup
- One-pot wonder: Everything cooks in a single pot for easy cleanup.
- Complex flavor: Tastes like it simmered for hours, not minutes.
- Versatile & forgiving: Easily adapt with different greens or a splash of cream.
- Low-carb satisfaction: Packed with protein and greens to keep you full.
Ingredients & Tools
- 1 tbsp olive oil
- 1 lb Italian sausage, casings removed (mild or hot, your choice!)
- 1 medium yellow onion, diced
- 3 cloves garlic, minced
- 6 cups chicken broth (low-sodium is best for control)
- 1 (14.5 oz) can diced tomatoes, undrained
- 1 tsp dried oregano
- ½ tsp red pepper flakes (optional, for heat)
- 1 bay leaf
- 5 oz fresh spinach
- Salt and black pepper to taste
- ¼ cup freshly grated Parmesan cheese, for serving
Tools: A large Dutch oven or heavy-bottomed soup pot, a wooden spoon, and a measuring cup.
Notes: The quality of your sausage really is the star here, so choose one you love. And don’t skip the fresh spinach at the end—it wilts down so beautifully and adds a vibrant color and fresh flavor that balances the richness perfectly.
Nutrition (per serving)
| Calories: | 385 kcal |
| Protein: | 22 g |
| Fat: | 29 g |
| Carbs: | 9 g |
| Fiber: | 3 g |
Serves: 4 | Prep Time: 10 minutes | Cook Time: 25 minutes | Total Time: 35 minutes
Before You Start: Tips & Ingredient Notes
- Choosing your sausage. This is your main flavor driver. Mild sausage gives a gentle, herby flavor, while hot sausage introduces a lovely warmth. If you’re using links, just squeeze the meat out of the casings—it’s oddly satisfying.
- Don’t rush the first step. Taking the time to properly brown the sausage and sauté the onions until they’re soft and translucent builds a flavor foundation that you simply can’t get any other way. This is where the magic starts.
- Fresh spinach vs. other greens. Baby spinach is ideal because it wilts almost instantly. If you use kale or chard, add it a few minutes earlier to allow time for it to tenderize in the hot broth.
- Taste before you salt. Between the sausage and the broth, there’s often plenty of salt already in the pot. Always do a final taste test at the end and season with salt and pepper as needed.
How to Make Italian Sausage and Spinach Soup
Step 1: Heat the olive oil in your large Dutch oven or soup pot over medium-high heat. Add the Italian sausage, using your wooden spoon to break it up into crumbles. Cook this for about 5-7 minutes, until it’s nicely browned and cooked through. You’ll notice the fat rendering out and the most incredible savory aroma filling your kitchen. Once browned, use a slotted spoon to transfer the sausage to a plate, leaving the drippings in the pot. Those drippings are liquid gold for flavor!
Step 2: To the same pot with the sausage drippings, add the diced onion. Sauté for about 4-5 minutes, stirring occasionally, until the onion becomes soft and translucent. Now, add the minced garlic and cook for just one more minute—you just want it to become fragrant, not burnt. Burnt garlic can turn bitter, so keep a watchful eye.
Step 3: It’s time to bring everything together. Return the browned sausage to the pot. Pour in the chicken broth and the entire can of diced tomatoes with their juices. Add the dried oregano, red pepper flakes (if using), and that single bay leaf. Give everything a good stir, scraping the bottom of the pot to lift up any of those delicious browned bits.
Step 4: Bring the soup to a lively boil, then immediately reduce the heat to low, letting it simmer gently. Cover the pot with a lid, but leave it slightly ajar. Let it simmer for about 15 minutes. This isn’t just about cooking; it’s about letting all those flavors get to know each other, meld, and become one harmonious broth.
Step 5: After 15 minutes, your soup will be fragrant and inviting. Remove the pot from the heat. Fish out and discard the bay leaf—its job is done. Now, stir in the fresh spinach. You might think it’s a lot, but it wilts down dramatically. Stir continuously for a minute or two until the spinach is dark green, wilted, and perfectly incorporated.
Step 6: Your final act is the taste test. Season with salt and freshly cracked black pepper to your liking. Remember, the Parmesan cheese you’ll add at serving will also contribute a salty, savory note. Ladle the hot soup into bowls, garnish generously with the grated Parmesan, and serve immediately. The contrast of the hot soup with the cool, sharp cheese is simply divine.
Storage & Freshness Guide
- Fridge: Cool completely and store in an airtight container for 3–4 days.
- Freezer: Freeze in portions for up to 3 months. Thaw overnight in fridge.
- Reviving: Reheat gently on the stovetop; spinach will be soft but flavorful.
Serving Suggestions
Complementary Dishes
- A simple Parmesan Crisp — It adds a fantastic, crunchy texture and cheesy flavor that mirrors the soup’s garnish, turning it into an edible spoon.
- Roasted Asparagus with Lemon Zest — The bright, clean flavor of the asparagus provides a lovely, fresh counterpoint to the rich and savory soup.
- Cauliflower “Garlic Bread” — You get all the herby, garlicky satisfaction of garlic bread without the carbs, perfect for dipping.
Drinks
- A bold Chianti — The acidity and cherry notes in this classic Italian red wine cut beautifully through the richness of the sausage and complement the tomato base.
- Sparkling Water with Lemon — Sometimes you just need a clean, crisp palate cleanser between spoonfuls, and the bubbles and citrus do the job perfectly.
- An Italian Lager — A cold, light beer like Peroni offers a refreshing contrast and its mild bitterness balances the savory notes wonderfully.
Something Sweet
- A few fresh raspberries — Their bright, slightly tart sweetness is a surprisingly elegant and light way to finish the meal without feeling overly heavy.
- Dark Chocolate (85% Cocoa) — Just a square or two. The deep, bitter chocolate is a sophisticated endnote that contrasts the savory soup beautifully.
- Whipped Ricotta with Vanilla — Sweetened lightly with a low-carb sweetener, it’s creamy, light, and feels like a proper dessert without the sugar crash.
Top Mistakes to Avoid
- Overcooking the spinach. If you add the spinach while the soup is still actively boiling or let it cook for too long, it will turn a drab, army green color and become slimy. The trick is to take the pot off the heat and let the residual heat wilt it perfectly.
- Not browning the sausage properly. This is where a ton of flavor develops. If you just gray the meat without getting those nice, caramelized brown bits, your soup will taste flat and one-dimensional. Patience here pays off in flavor.
- Forgetting to remove the bay leaf. It seems like a small thing, but no one wants to bite into a tough, sharp bay leaf. It’s not meant to be eaten, so make it a habit to take it out before serving.
- Oversalting before tasting. Sausages vary wildly in their salt content. Always wait until the very end, after the soup has simmered and you’ve added the Parmesan, to decide if it needs more salt.
Expert Tips
- Tip: Make a double batch and freeze it. This soup freezes exceptionally well. Let it cool completely, then portion it into airtight containers. It’s a lifesaver for a future busy night. Just thaw and reheat gently on the stove.
- Tip: Brown the sausage in bigger chunks. Instead of making tiny crumbles, try browning the sausage in larger, rougher chunks. This gives you more varied texture in every spoonful, with some nice, meaty bites.
- Tip: Add a Parmesan rind while simmering. If you have a leftover rind of Parmesan cheese in your fridge, toss it into the soup as it simmers. It will melt into the broth, adding an incredible layer of umami and richness.
- Tip: Finish with a splash of acid. Right before serving, a tiny squeeze of fresh lemon juice or a drizzle of good balsamic vinegar can brighten up all the flavors and make the soup taste even more vibrant and complex.
FAQs
Can I make this soup in a slow cooker?
Absolutely, you can! The method just changes a little. Brown the sausage and sauté the onion and garlic in a skillet first—this step is crucial for flavor. Then, transfer everything (except the spinach and Parmesan) to your slow cooker. Cook on low for 6-7 hours or on high for 3-4 hours. Stir in the spinach right before serving, letting it wilt in the hot soup.
What can I use instead of spinach?
Kale is a fantastic, sturdy substitute. Just remember to remove the tough stems and add the chopped leaves about 10 minutes before the end of the simmering time so they have a chance to soften. Swiss chard also works beautifully, and you can even use the stems—just chop them finely and sauté them with the onions.
Is this soup keto-friendly?
Yes, it fits perfectly into a keto lifestyle. With only 9 grams of total carbohydrates and 3 grams of fiber per serving, it comes in at a very manageable 6 grams of net carbs. Just be sure to check that your sausage doesn’t have any hidden sugars or fillers.
How long will leftovers last in the fridge?
Stored in an airtight container, your soup will stay fresh and delicious for 3 to 4 days. The spinach will be very soft upon reheating, but the flavor will still be wonderful. Reheat it gently on the stovetop over medium-low heat.
Can I add other vegetables to this soup?
Of course! This is a very adaptable recipe. Sliced mushrooms sautéed with the onions would be lovely. You could also add some diced zucchini or yellow squash; just add them in the last 10 minutes of simmering so they don’t get mushy. A little chopped celery with the onions is another classic addition.
Italian Sausage And Spinach Soup
Make this easy Italian Sausage and Spinach Soup for a quick, one-pot weeknight dinner. Ready in 35 minutes! Get the simple recipe now.
Ingredients
For the Ingredients
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1 tbsp olive oil
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1 lb Italian sausage (casings removed (mild or hot, your choice!))
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1 medium yellow onion (diced)
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3 cloves garlic (minced)
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6 cups chicken broth (low-sodium is best for control)
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1 can diced tomatoes (14.5 oz, undrained)
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1 tsp dried oregano
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½ tsp red pepper flakes (optional, for heat)
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1 bay leaf
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5 oz fresh spinach
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Salt and black pepper (to taste)
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¼ cup freshly grated Parmesan cheese (for serving)
Instructions
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Heat the olive oil in your large Dutch oven or soup pot over medium-high heat. Add the Italian sausage, using your wooden spoon to break it up into crumbles. Cook this for about 5-7 minutes, until it’s nicely browned and cooked through. Once browned, use a slotted spoon to transfer the sausage to a plate, leaving the drippings in the pot.01
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To the same pot with the sausage drippings, add the diced onion. Sauté for about 4-5 minutes, stirring occasionally, until the onion becomes soft and translucent. Now, add the minced garlic and cook for just one more minute—you just want it to become fragrant, not burnt.02
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Return the browned sausage to the pot. Pour in the chicken broth and the entire can of diced tomatoes with their juices. Add the dried oregano, red pepper flakes (if using), and that single bay leaf. Give everything a good stir, scraping the bottom of the pot to lift up any of those delicious browned bits.03
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Bring the soup to a lively boil, then immediately reduce the heat to low, letting it simmer gently. Cover the pot with a lid, but leave it slightly ajar. Let it simmer for about 15 minutes.04
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After 15 minutes, your soup will be fragrant and inviting. Remove the pot from the heat. Fish out and discard the bay leaf. Now, stir in the fresh spinach. Stir continuously for a minute or two until the spinach is dark green, wilted, and perfectly incorporated.05
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Your final act is the taste test. Season with salt and freshly cracked black pepper to your liking. Ladle the hot soup into bowls, garnish generously with the grated Parmesan, and serve immediately.06
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