Italian Penicillin Soup is a cozy, restorative bowl that feels like a warm hug when you’re under the weather or craving simple comfort. It’s a light, brothy chicken soup with small pasta and greens—quick to make, forgiving, and endlessly adaptable. If you enjoy hearty, nourishing bowls, this recipe sits comfortably alongside other comforting Italian-inspired soups like the easy lasagna soup that turns classic flavors into something quick and weeknight-friendly.
Why you’ll love this dish
This soup earns the nickname “penicillin” because it’s soothing, immune-boosting, and deceptively healing—warm broth, garlic, and leafy greens do a lot of good for frazzled appetites. It’s also:
- Fast: Ready in about 25–35 minutes.
- Budget-friendly: Uses pantry pasta and simple produce.
- Crowd-pleasing: Mild flavors kids and adults both like.
- Flexible: Great for leftovers and pantry substitutions.
“Simple, soothing, and exactly what my family needed on a rainy night—flavorful broth, tender chicken, and tiny pasta make it a go-to.” — Home cook review
Step-by-step overview
You’ll sweat aromatics, soften diced vegetables, add shredded chicken and broth, then simmer pasta right in the pot. Finish with quick-wilted greens and a sprinkle of parsley. The whole process is straightforward: sauté → simmer → cook pasta → add greens → serve. This approach keeps cleanup minimal and timing predictable, especially if you use leftover or rotisserie chicken.
What you’ll need
- 1 tablespoon olive oil
- 1 onion, chopped (yellow or sweet)
- 2 garlic cloves, minced
- 2 carrots, diced
- 2 celery stalks, diced
- 1 pound cooked chicken, shredded (rotisserie or poached)
- 6 cups chicken broth (low-sodium if preferred)
- 1 cup small pasta (ditalini, orzo, or small shells)
- 1 cup spinach or kale, roughly chopped (kale stems removed)
- Salt and pepper, to taste
- Fresh parsley, chopped, for garnish
Substitution notes: Use vegetable broth and white beans for a vegetarian version. For gluten-free, swap in gluten-free small pasta or use cooked rice. Rotisserie chicken saves time and adds flavor.
Step-by-step instructions
- Heat 1 tablespoon olive oil in a large pot over medium heat. Add the chopped onion and sauté until translucent, about 4–5 minutes. Add the minced garlic and cook another 30–60 seconds until fragrant.
- Add the diced carrots and celery. Cook, stirring occasionally, about 5 minutes to soften but not brown.
- Stir in the shredded chicken and pour in 6 cups of chicken broth. Bring the mixture to a gentle boil.
- Add 1 cup small pasta and reduce heat to maintain a simmer. Cook until the pasta is al dente, about 8–10 minutes (check package directions and taste to avoid overcooking).
- Stir in 1 cup of spinach or kale. Season with salt and freshly ground black pepper to taste. Simmer for 2–3 minutes until greens are wilted and everything is heated through.
- Ladle into bowls and garnish with chopped fresh parsley. Serve hot.
Short, action-oriented steps keep this accessible for beginner cooks while still offering room for adjustments.
Best ways to enjoy it
Serve this soup with warm crusty bread or garlic toast for sopping up the broth. A squeeze of lemon or a grating of Parmesan adds bright finishing notes. For a complete meal, pair it with a simple green salad, or serve alongside other Italian comfort dishes—if you like sheet-pan or lasagna-style family meals, try Giada’s sheet-pan lasagna as a hearty accompaniment for a weekend dinner. Use shallow bowls for pretty presentation and finish with extra parsley and freshly cracked pepper.
Storage and reheating tips
- Refrigerator: Cool the soup to room temperature within two hours, then store in an airtight container for up to 3–4 days.
- Freezer: For best texture, freeze before adding delicate greens or cooked pasta. Freeze cooled soup in airtight containers for up to 3 months. Thaw overnight in the fridge before reheating.
- Reheating: Gently reheat on the stovetop over medium-low heat. If refrigerated soup has absorbed too much broth, add a splash of chicken broth or water while warming. If pasta gets mushy after freezing, consider storing pasta separately or adding a handful of fresh pasta when reheating and cooking until al dente.
Food safety note: Always reheat to at least 165°F (74°C) and do not refreeze thawed soup.
Pro chef tips
- Use hot broth when adding pasta to shorten cooking time and keep textures lively.
- If using kale, remove tough stems and chop leaves thinly so they wilt quickly.
- For extra depth, sauté vegetables until they begin to caramelize lightly—don’t brown too much or you’ll lose the soup’s bright character.
- Rotisserie chicken is a time-saver; reserve any pan juices and add a splash to the pot for extra richness.
- Taste and adjust salt only after the pasta has cooked; pasta can absorb sodium and change the seasoning balance.
Creative twists
- Lemon-Parmesan: Finish with lemon zest and grated Pecorino Romano for a tangy, savory lift.
- Spicy Kick: Add red pepper flakes when sautéing garlic for warmth.
- Vegetarian: Swap chicken for cannellini beans and use vegetable broth; add a drizzle of good olive oil at the end.
- Hearty Winter: Stir in diced potatoes with the carrots/celery and simmer slightly longer.
- Low-carb: Replace pasta with riced cauliflower or omit it entirely and bulk up with extra greens and beans.
Your questions answered
Q: Why is it called “penicillin” soup?
A: The name is a playful nod to how comforting and restorative the soup feels—warm broth, garlic, and veggies can soothe a scratchy throat and lift the spirits, much like a folk remedy rather than actual medicine.
Q: Can I use raw chicken instead of pre-cooked?
A: Yes. If using raw chicken, add it with the broth and simmer until fully cooked (internal temp of 165°F/74°C), then shred in the pot or remove, shred, and return to the soup. You may need to add a few extra minutes to the cooking time.
Q: How do I prevent the pasta from getting mushy?
A: Cook the pasta al dente and serve immediately. If you plan to store leftovers, undercook the pasta by 1–2 minutes or store pasta separately and combine when reheating.
Q: Is this suitable for kids?
A: Absolutely—mild flavors, tender chicken, and small pasta make it kid-friendly. Reduce salt and skip any spicy add-ins for picky eaters.
Q: Can I make this in an Instant Pot or slow cooker?
A: For Instant Pot, sauté aromatics using the sauté function, add broth, chicken, and pasta, and cook on high pressure for half the pasta’s recommended time, then quick-release and add greens. For slow cooker, add all ingredients except pasta and greens and cook on low 4–6 hours; add pasta in the last 20–30 minutes.
Enjoy a bowl whenever you need something simple, soothing, and satisfying—this Italian Penicillin Soup is the kind of recipe that earns a regular spot in the rotation.
PrintItalian Penicillin Soup
A cozy, restorative Italian soup that’s quick to make with chicken, small pasta, and hearty greens.
- Prep Time: 10 minutes
- Cook Time: 25 minutes
- Total Time: 35 minutes
- Yield: 4 servings
- Category: Soup
- Method: Stovetop
- Cuisine: Italian
- Diet: Gluten-Free, Dairy-Free
Ingredients
- 1 tablespoon olive oil
- 1 onion, chopped (yellow or sweet)
- 2 garlic cloves, minced
- 2 carrots, diced
- 2 celery stalks, diced
- 1 pound cooked chicken, shredded (rotisserie or poached)
- 6 cups chicken broth (low-sodium if preferred)
- 1 cup small pasta (ditalini, orzo, or small shells)
- 1 cup spinach or kale, roughly chopped (kale stems removed)
- Salt and pepper, to taste
- Fresh parsley, chopped, for garnish
Instructions
- Heat 1 tablespoon olive oil in a large pot over medium heat. Add the chopped onion and sauté until translucent, about 4–5 minutes. Add the minced garlic and cook another 30–60 seconds until fragrant.
- Add the diced carrots and celery. Cook, stirring occasionally, about 5 minutes to soften but not brown.
- Stir in the shredded chicken and pour in 6 cups of chicken broth. Bring the mixture to a gentle boil.
- Add 1 cup small pasta and reduce heat to maintain a simmer. Cook until the pasta is al dente, about 8–10 minutes (check package directions).
- Stir in 1 cup of spinach or kale. Season with salt and freshly ground black pepper to taste. Simmer for 2–3 minutes until greens are wilted and everything is heated through.
- Ladle into bowls and garnish with chopped fresh parsley. Serve hot.
Notes
For a vegetarian option, use vegetable broth and white beans. For gluten-free, swap in gluten-free pasta or use cooked rice.

