Blackened Chicken Alfredo Soup

This Chicken Alfredo Soup has all the creamy, garlicky satisfaction of chicken alfredo transformed into a hearty, cozy bowl of soup. Wide ribbons of Mafaldine simmer in a creamy Parmesan and Monterey Jack broth with juicy blackened chicken, lots of garlic, and crispy bacon piled over the top.

It’s chicken alfredo in soup form. You still get that familiar combination of garlic, Parmesan, cream, chicken, and pasta, just transformed into a cozy soup. It’s substantial enough to make a complete dinner, especially with warm buttery breadsticks for dunking.

Behind This Chicken Alfredo Soup Recipe

I wanted to create a new soup for my family this year because we LOVE soup season, especially when it’s something hearty and satisfying enough to feel like a complete meal.

And if you’ve been following my blog for a while, you probably already know how I feel about chicken Alfredo. I’ve made just about every variation, from my Blackened Chicken Alfredo and better-than-Olive Garden’s Chicken Alfredo to Chicken Alfredo Lasagna Roll-Ups.

There’s just something about that combination of lots of garlic, creamy sauce, Parmesan, and pasta that never gets old. So naturally, I started wondering how I could turn everything I love about chicken Alfredo into a soup without watering down what makes it so good in the first place.

This recipe was my answer. The broth is creamy and garlicky with Parmesan and Monterey Jack melted right into it, wide Mafaldine noodles make every spoonful feel substantial, and the blackened chicken and crispy bacon bring so much savory flavor. It’s unmistakably soup, but it still gives you all the satisfaction of sitting down to a bowl of chicken Alfredo.

Tips From My Kitchen

• Pound the chicken evenly. Bringing the breasts to about 1/4-inch thickness helps them cook quickly and evenly while giving you plenty of surface area for the Cajun seasoning.
• Leave the chicken alone for the first four minutes. That uninterrupted contact with the hot Dutch oven helps create the deeply seasoned crust you want on blackened chicken.
• Save that bacon grease. You only need a spoonful for the soup, but it adds another layer of savory flavor to the onion and garlic.
• Scrape up the browned bits. As the onion cooks, use your spoon to release the flavorful bits left behind by the chicken. They’re going straight into your broth.
• Cook the flour before adding liquid. Give it about a minute so you don’t end up with a raw flour taste.
• Watch the noodles rather than the clock. Different brands and pasta shapes cook at different rates. Ten minutes is a guideline; tenderness is your endpoint.
• Freshly grate both cheeses. They’ll melt much more smoothly into the hot broth than pre-shredded cheese.
• Season at the very end. Cajun seasoning, Parmesan and bacon all contribute salt, so taste the finished soup before adding more.
• Expect it to thicken. The noodles continue absorbing broth as the soup sits. That’s normal and easily fixed with a splash of chicken stock.

Variations & Substitutions

Swap the Mafaldine: Pappardelle or Toccole are my first-choice substitutes because they maintain that wide look and texture. Fettuccine or another sturdy pasta can also work, although cooking times will vary.

Adjust the heat: Cajun seasoning blends range from mild to surprisingly spicy. Use your favorite and adjust the amount added to the broth depending on how much heat you want.

Use chicken thighs: Boneless, skinless thighs can be substituted for breasts. Cook to a safe internal temperature and slice or dice before returning them to the soup.

Make it more noodle-forward: Eight ounces gives you a good soup-to-pasta ratio. You can add slightly more if you want an especially hearty bowl, but remember that more pasta will absorb more of the broth.

Ingredients You’ll Need & Why

There are a few layers of flavor happening in this Chicken Alfredo Soup, but they’re all building toward that creamy, garlicky alfredo flavor.

Chicken Breasts + Cajun Seasoning: Pounding the chicken thin gives us more surface area for seasoning and allows it to develop a beautiful blackened crust quickly. Use a Cajun seasoning you already love, keeping in mind that salt levels vary considerably between brands.

Bacon: Four slices give us crispy bacon for finishing the bowls and rendered fat for building the soup base. That little spoonful of bacon grease adds a ton of flavor without requiring much.

Onion + LOTS of Garlic: One onion gives the soup a savory foundation, while six cloves of garlic ensures we don’t lose the garlicky character you expect from alfredo.

Italian Seasoning + Cajun Seasoning: Italian seasoning reinforces the flavors we associate with Alfredo, while a smaller amount of Cajun seasoning carries the flavor of the blackened chicken into the broth.

Flour: Just 2 1/2 tablespoons to lightly thicken the broth. We’re making soup, not Alfredo sauce, so we want body without taking it so far that it becomes gravy-like.

Chicken Stock + Half-and-Half: Five cups of stock keep this firmly in soup territory while three cups of half-and-half give the broth its creamy consistency. Unsalted stock is especially helpful because we’re adding several salty ingredients later.

Mafaldine Pasta: These wide, ruffled ribbons are one of my favorite parts of this recipe. Breaking them into thirds makes them much easier to eat with a spoon while keeping that beautiful, substantial pasta texture. Pappardelle is a great substitute.

Parmesan + Monterey Jack: Parmesan gives us that unmistakable salty, nutty Alfredo flavor. Monterey Jack melts incredibly smoothly and adds creaminess and body without overpowering the Parmesan.

How to Make Chicken Alfredo Soup

This soup is all about building layers of flavor in the same Dutch oven before turning everything into that creamy, cheesy alfredo broth.

Crisp the Bacon

Add the bacon to a large Dutch oven over medium-low heat and cook until crisp.

Transfer it to a paper towel-lined plate, then reserve the rendered bacon grease. Once the bacon has cooled, chop or crumble it for serving.

Blacken the Chicken

Pound the chicken breasts to an even 1/4-inch thickness, drizzle lightly with olive oil, and season generously on both sides with Cajun seasoning.

Add olive oil to the Dutch oven and heat over medium-high. Add the chicken and don’t touch it for about four minutes. You want that first side to develop a deeply browned, seasoned crust.

Flip the chicken, reduce the heat to low, and continue cooking until it reaches 165°F internally. Transfer it to a plate, tent loosely with foil, and don’t discard any juices that collect while it rests.

Build the Flavor Base

Add a spoonful of the reserved bacon grease to the same pot and reduce the heat to medium-low.

Add the onion and cook until translucent and tender, about 4–5 minutes, scraping up those browned bits left behind by the chicken as you go.

Add the garlic and cook just until fragrant. Stir in the Italian seasoning, Cajun seasoning, black pepper and salt.

Lightly Thicken the Broth

Sprinkle the flour over the onion mixture and stir continuously for about one minute.

Gradually pour in the chicken stock while stirring and scraping the bottom of the Dutch oven, then add the half-and-half.

You should have a creamy broth with enough body to coat the noodles lightly, but it should still very clearly be soup.

Cook the Mafaldine

Bring the broth to a gentle boil and add the Mafaldine broken into thirds. Stir well, cover and reduce the heat to a simmer.

Cook until the noodles are tender, stirring periodically so the ribbons don’t clump together or stick to the bottom. Start checking them around the 10-minute mark, but let the pasta’s texture determine when they’re done.

Finish with Chicken and Cheese

Dice the rested blackened chicken and add it to the soup along with all those juices that accumulated on the plate.

Reduce the heat to low and stir in the freshly grated Parmesan and Monterey Jack until completely melted and incorporated into the broth.

Taste before adding additional salt or seasoning. Remember that those crispy bacon pieces you’re about to add will bring another salty bite.

Load Up the Bowls

Ladle the soup into bowls, making sure everyone gets plenty of blackened chicken and those wide Mafaldine ribbons.

Finish with crispy bacon, fresh parsley and another shower of Parmesan. And in my house, warm buttery breadsticks alongside are non-negotiable.

More Recipes to Try

If you love the creamy, garlicky flavors of this Chicken Alfredo Soup, my Blackened Chicken Alfredo is a must-try: juicy, Cajun-seasoned chicken served over pasta in a classic, creamy Alfredo sauce. My Chicken Alfredo Roll-Ups turn those same flavors into a cozy baked pasta dinner, while Alfredo Sheet Pan Lasagna gives you all the cheesy layers of lasagna with an easier, more laid-back approach. And if another hearty bowl of soup is calling your name, try my Sausage and Gnocchi Soup, loaded with Italian sausage, pillowy gnocchi, and Parmesan in a rich, creamy broth.

Have you tried this Chicken Alfredo Soup? If so, I’d love to hear what you thought! Leave a comment below with your questions or feedback. Your reviews help other readers in the Bad Batch Baking community decide what to make next.

Be sure to tag me @BadBatchBaking on social media using #badbatchbaking so I can see what you’re cooking!

How to Serve & Store Leftovers

My favorite way to serve Chicken Alfredo Soup is with warm buttery breadsticks. They’re perfect for swiping through the creamy broth at the bottom of the bowl. A crisp Caesar salad would also be great if you want something fresh alongside it.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. The Mafaldine will continue absorbing liquid, so the soup will become considerably thicker as it sits.

When reheating, warm it gently over medium-low heat and add chicken stock a splash at a time until the broth returns to your preferred consistency.