Slow Cooker White Lasagna Soup (Creamy & Cozy One-Pot Meal)

On cold days when I need something warm and comforting, this slow cooker white lasagna soup is my ultimate go-to.

It brings all the creamy, herby flavors of traditional lasagna — but in a cozy, spoonable form.

No layering, no baking — just set it and forget it, and return to a house filled with the most irresistible aroma.

Why I Love This Recipe

Set-it-and-forget-it slow cooker magic

Creamy, comforting, and packed with lasagna flavor

Sundried tomatoes add a tangy pop

Fresh spinach for a nutritious touch

Feels like comfort food, tastes like a hug in a bowl

What You’ll Need (Ingredient Highlights)

White onion + garlic – The aromatic base that sets the tone

Italian seasoning + crushed red pepper flakes – For bold, balanced flavor

Chicken breasts – Cook until fall-apart tender, then shred

Sundried tomatoes – Add a sweet and savory tang

Heavy cream + cornstarch – Makes the soup luxuriously creamy

Spinach – Stirred in at the end for a pop of color and nutrition

Broken lasagna noodles – They soak up the broth and mimic the comfort of pasta

Parmesan + parsley – Classic Italian finish

Pro Tips Before You Start

Don’t skip sautéing the onion if you want deeper flavor (optional)

Chop sundried tomatoes into small bits so they soften nicely

Whisk cream and cornstarch well before adding to avoid lumps

Cook noodles separately so they don’t get mushy

Add spinach right before serving for vibrant green color

How to Make Slow Cooker White Lasagna Soup

Step 1: Build the Flavor Base

Add diced onion, minced garlic, Italian seasoning, salt, pepper, and crushed red pepper flakes (if using) directly to the slow cooker.

Step 2: Add Stock and Chicken

Pour in chicken stock and stir well.

Nestle the chicken breasts into the liquid.

Step 3: Add Tomatoes and Cook

Sprinkle sundried tomatoes over the top.

Cover and cook on low for 6–8 hours or high for 3–4 hours, until chicken is fork-tender.

Step 4: Shred Chicken

Remove cooked chicken breasts, shred them with two forks, and return the shredded chicken to the slow cooker.

Step 5: Add Cream Mixture

In a bowl, whisk together heavy cream and cornstarch until smooth.

Pour into the slow cooker and stir well to combine.

Step 6: Simmer and Finish

Cover again and cook on high for another 30 minutes so the soup thickens.

Step 7: Add Noodles and Spinach

While the soup simmers, cook lasagna noodles separately until al dente.

Drain well. Stir fresh spinach into the soup until wilted.

Then, gently fold in the cooked noodles right before serving.

Step 8: Garnish and Serve

Ladle the soup into bowls and top with shredded parmesan cheese and fresh parsley.

Serve warm and enjoy every creamy spoonful.

What to Serve It With

Garlic bread or buttery breadsticks

Crisp Caesar salad or arugula with lemon vinaigrette

Roasted vegetables like zucchini or bell peppers

A glass of white wine or sparkling water with lemon

Extra parmesan on the side for cheese lovers

Variations / Substitutions

Swap chicken breasts for rotisserie chicken (add at the end)

Use kale instead of spinach for a heartier green

Add mushrooms, zucchini, or white beans for extra texture

Use half-and-half instead of heavy cream for a lighter soup

Omit red pepper flakes if you prefer zero heat

Storage & Leftovers

Refrigerate: Store leftovers in an airtight container up to 4 days

Freeze: Without the noodles, it freezes well up to 2 months

Reheat: Gently on the stovetop, adding a splash of stock if needed

Pro tip: Store noodles separately if you plan to keep leftovers

FAQs

Can I use rotisserie chicken instead of raw chicken?
Yes! Just skip the long cooking time and add the shredded cooked chicken during the last 30 minutes.

Can I make this soup dairy-free?
You can try using unsweetened coconut cream or a dairy-free substitute, but the texture and flavor may differ.

Can I cook the noodles in the soup?
Technically yes, but they’ll absorb too much liquid and become mushy.

Cooking separately gives better results.

Can I use regular pasta instead of lasagna noodles?
Absolutely — fusilli, bowties, or even penne work well in this soup.

How can I make it vegetarian?
Use veggie broth, omit chicken, and add mushrooms or white beans instead for protein.

Is it spicy with the red pepper flakes?
Not too spicy — just a gentle warmth. Feel free to omit if you prefer mild.

Can I make this on the stovetop instead of a slow cooker?
Yes! Sauté the aromatics in a large pot, add the broth and chicken, simmer until tender, and follow the same finishing steps.

Final Thoughts

If you love lasagna but hate the fuss, this slow cooker white lasagna soup will be your new obsession.

It’s creamy, hearty, and packed with everything you love about the classic dish — just in soup form.

Whether you’re cooking for your family or meal prepping for the week, this recipe is guaranteed to deliver comfort by the spoonful.