If you’re craving the hearty comfort of lasagna but want something a little lighter and easier to prepare, the Slow Cooker White Lasagna Soup Recipe is exactly what you need. It captures all the creamy, savory flavors of traditional white lasagna in a warm, cozy soup form that’s perfect for any day of the week. With tender chicken, fresh spinach, sun-dried tomatoes, and broken lasagna noodles swimming in a creamy, garlicky broth, it’s a beautiful twist on a classic that will quickly become your go-to meal. Plus, the slow cooker does all the heavy lifting so you can come home to a pot of pure comfort.

Ingredients You’ll Need
This recipe comes together beautifully with simple, fresh ingredients that each bring their own special touch. From the garlic and onion building a flavorful base to the creamy finish with heavy cream and Parmesan, every component plays a vital role in delivering irresistible taste and texture.
- White onion diced: Adds sweetness and depth to the broth as it slowly softens.
- Garlic minced: Infuses the soup with that classic aromatic kick you expect in Italian dishes.
- Italian seasoning (2 tsp.): Brings a blend of herbs that evoke the essence of a traditional lasagna.
- Salt (1 tsp.): Enhances all the flavors throughout the soup perfectly.
- Black pepper (1/2 tsp.): Adds a gentle warmth, balancing the creaminess without overpowering.
- Crushed red pepper flakes (1/4 tsp., optional): For those who love a touch of heat to brighten the dish.
- Chicken stock (6 cups): The savory backbone that carries all the rich flavors together.
- Boneless skinless chicken breasts (2-3, about 1 pound): Tender protein that becomes fall-apart soft after slow cooking.
- Sun-dried tomatoes chopped (1/2 cup): Provides bursts of tangy sweetness and beautiful color contrast.
- Fresh spinach (4 cups): Adds freshness and vibrant green color, plus a nutritious boost.
- Cooked lasagna noodles (8 oz., broken): The perfect pasta element, hearty but easy to eat in soup form.
- Cornstarch (2 Tbsp.): Used to give the broth a luscious, creamy consistency.
- Heavy cream (1 cup): Makes the soup decadently smooth and rich without being overly heavy.
- Shredded Parmesan cheese: To sprinkle on top for an irresistible finishing touch.
- Fresh parsley: Brightens each bowl visually and adds a pop of fresh herbaceous flavor.
How to Make Slow Cooker White Lasagna Soup Recipe
Step 1: Prep the Slow Cooker Base
Start by placing the diced onion, minced garlic, Italian seasoning, salt, black pepper, and optional crushed red pepper flakes into your slow cooker. These aromatics and herbs form the fragrant base that will infuse every spoonful with rich flavor as they slowly cook.
Step 2: Add Chicken Stock, Chicken, and Sun-Dried Tomatoes
Pour in the chicken stock and give everything a gentle stir to combine the seasonings throughout the liquid. Then nestle the chicken breasts on top and sprinkle the chopped sun-dried tomatoes over the ingredients. The tomatoes add a subtle tang and depth that balances perfectly with the creaminess to come.
Step 3: Slow Cook Until Tender
Cover your slow cooker and cook the mixture on low for 6-8 hours or on high for 3-4 hours. During this time, the chicken becomes incredibly tender and the flavors meld beautifully, creating that signature comforting broth.
Step 4: Shred the Chicken
Once the chicken is cooked through, remove the breasts and shred them with two forks. Return the shredded chicken to the slow cooker, giving everything a good stir to distribute the tender meat evenly throughout your soup.
Step 5: Make and Add the Creamy Thickener
In a small bowl, whisk together the heavy cream and cornstarch until smooth—this simple mixture is going to transform your broth into a luxurious, velvety finish. Pour this thickener into the slow cooker and stir thoroughly to combine.
Step 6: Finish Cooking the Soup
Cover the slow cooker again and cook on high for an additional 30 minutes. This step allows the soup to thicken alongside the cream and cornstarch, ensuring every spoonful feels indulgently creamy without being heavy.
Step 7: Prepare Lasagna Noodles and Add Greens
While the soup thickens, cook your lasagna noodles according to the package instructions, then drain and set them aside. When the soup is ready, stir in fresh spinach until it wilts, then add the broken noodles gently to avoid over-mixing and keep the noodles intact.
How to Serve Slow Cooker White Lasagna Soup Recipe

Garnishes
To truly elevate your bowl, sprinkle lots of shredded Parmesan cheese on top while the soup is still hot so it melts into ribbons of cheesy goodness. A handful of freshly chopped parsley adds a burst of color and subtle herb flavor, making each serving look as delightful as it tastes.
Side Dishes
This soup shines as a complete meal on its own, but pairing it with a simple side salad or crusty garlic bread can make it feel extra special. The crisp greens or crunchy bread provide a nice contrast to the creamy, comforting texture of the soup.
Creative Ways to Present
Try serving this soup in rustic bowls with a grating of fresh Parmesan at the table, or ladle it into mini soup crocks for a charming appetizer at your next dinner party. Garnishing with a lemon zest twist can also brighten the creamy base for a fresh twist that surprises and delights.
Make Ahead and Storage
Storing Leftovers
Keep any leftover Slow Cooker White Lasagna Soup Recipe in an airtight container in the refrigerator for up to 3 days. The flavors actually deepen overnight, making reheated portions even more tempting the next day.
Freezing
This soup freezes beautifully, just make sure to cool it completely before portioning into freezer-safe containers. It’s best frozen without the Parmesan garnish—add fresh cheese after reheating for the best texture and flavor. Frozen soup will keep well for up to 2 months.
Reheating
Reheat your soup gently on the stove over medium-low heat, stirring occasionally until warmed through. If the soup thickens too much, add a splash of chicken stock or water to loosen it up and bring back that creamy comfort.
FAQs
Can I use frozen chicken breasts for this recipe?
Absolutely! Just be sure to add extra cooking time if you’re cooking on low, as frozen chicken will need longer to become tender and shred easily.
Is there a vegetarian version of this soup?
Yes! Simply swap the chicken and chicken stock for vegetables and vegetable broth, then add hearty ingredients like cannellini beans or mushrooms to keep it satisfying.
Can I use dried lasagna noodles instead of cooked ones?
For best results, cook the lasagna noodles ahead of time as directed and then add them to the soup at the end. Adding them uncooked can lead to mushy noodles that absorb too much liquid.
How spicy is this soup with the crushed red pepper flakes?
The red pepper flakes add just a subtle kick to brighten the flavors. You can always leave them out or increase the amount based on your heat preference.
Can I make this recipe in an Instant Pot?
Yes! Use the Slow Cooker or Soup setting to replicate the low and slow cooking process, adjusting cook times to about 20-25 minutes under pressure, then finishing with the cream and thickener as directed.
Final Thoughts
If you’ve been on the lookout for a cozy, soul-warming meal with all the flavors of a rich lasagna but without the fuss of layers and baking, the Slow Cooker White Lasagna Soup Recipe is your dream come true. It’s simple to prepare, wonderfully comforting, and endlessly delicious. I can’t wait for you to try it and fall in love with this soup as much as I have. Enjoy every creamy, savory spoonful!
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Slow Cooker White Lasagna Soup Recipe
- Prep Time: 15 minutes
- Cook Time: 6 hours 10 minutes
- Total Time: 6 hours 25 minutes
- Yield: 6 servings
- Category: Soup
- Method: Slow Cooking
- Cuisine: Italian-American
Description
This Slow Cooker White Lasagna Soup is a comforting, creamy, and hearty dish that combines tender chicken, fresh spinach, sun-dried tomatoes, and broken lasagna noodles in a flavorful Italian-seasoned broth. This easy-to-make soup is perfect for cozy nights and requires minimal hands-on time thanks to the slow cooker method.
Ingredients
Soup Base
- 1 white onion, diced
- 4 cloves garlic, minced
- 2 tsp. Italian seasoning
- 1 tsp. salt
- 1/2 tsp. black pepper
- 1/4 tsp. crushed red pepper flakes (optional, for heat)
- 6 cups chicken stock
- 2–3 boneless skinless chicken breasts (about 1 pound)
- 1/2 cup sun-dried tomatoes, chopped
Additional Ingredients
- 4 cups fresh spinach
- 8 oz. cooked lasagna noodles, broken
- 2 Tbsp. cornstarch
- 1 cup heavy cream
- Shredded Parmesan cheese (for serving)
- Fresh parsley (for garnish)
Instructions
- Prepare the slow cooker: Combine the diced onion, minced garlic, Italian seasoning, salt, black pepper, and crushed red pepper flakes (if using) directly in the slow cooker.
- Add liquids and chicken: Pour in the chicken stock and stir well to combine all ingredients. Place the chicken breasts on top and sprinkle the chopped sun-dried tomatoes over the mixture.
- Cook: Cover the slow cooker and cook on low for 6-8 hours or on high for 3-4 hours until the chicken breasts are fully cooked and tender.
- Shred the chicken: Remove the cooked chicken breasts from the slow cooker, shred them using two forks, and then return the shredded chicken back into the slow cooker.
- Make the thickener: In a separate bowl, whisk together the heavy cream and cornstarch until smooth. Pour this mixture into the slow cooker and stir thoroughly to incorporate it evenly.
- Finish cooking: Cover and cook on high for an additional 30 minutes to allow the soup to thicken.
- Cook noodles: While the soup finishes cooking, prepare the lasagna noodles according to package instructions. Drain and set aside.
- Add spinach and noodles: Stir fresh spinach into the soup until it wilts, then gently fold in the cooked, broken lasagna noodles.
- Serve: Ladle the soup into bowls and top with shredded Parmesan cheese and fresh parsley. Serve hot and enjoy this creamy, flavorful slow cooker white lasagna soup!
Notes
- You can adjust the amount of crushed red pepper flakes to control the heat level on the soup.
- To save time, use pre-cooked rotisserie chicken instead of raw chicken breasts.
- For a thicker soup, increase the cornstarch quantity slightly or cook an additional 10-15 minutes after adding the cream mixture.
- Ensure lasagna noodles are fully cooked before adding to prevent toughness in the soup.
- Fresh spinach can be substituted with kale or Swiss chard if preferred.

