Slow Cooker White Lasagna Soup

Introduction

This rich and creamy soup captures all the comforting flavors of a classic white lasagna in a spoonable, slow-cooker-friendly form. You get tender chicken, hearty lasagna noodles, and a luscious broth without the fuss of layering and baking. It’s the ultimate hands-off meal for a cozy night in.

Prep & Cook Time

Prep Time: 25 minutes

Cook Time: 360 minutes

Total Time: 6 hours 25 minutes

Servings: 6

Ingredients

• 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 sundried tomatoes (chopped)
• 1 cup heavy cream
• 2 Tbsp. cornstarch
• 4 cups fresh spinach
• 8 oz. broken lasagna noodles (cooked separately and drained)
• shredded parmesan cheese and fresh parsley for serving

Instructions

1. Add the diced onion, minced garlic, Italian seasoning, salt, black pepper, red pepper flakes (if using), and chicken stock to your slow cooker. Stir to combine.
2. Place the chicken breasts into the broth mixture. They should be submerged.
3. Cover and cook on LOW for 6 hours, or on HIGH for 3-4 hours, until the chicken is cooked through and tender.
4. About 30 minutes before serving, remove the chicken breasts to a cutting board and shred them with two forks. Return the shredded chicken to the slow cooker.
5. Stir in the chopped sundried tomatoes.
6. In a small bowl, whisk the heavy cream and cornstarch together until completely smooth. Slowly stir this mixture into the soup.
7. Cover and cook on HIGH for 20-30 minutes to allow the soup to thicken slightly.
8. Just before serving, stir in the fresh spinach until wilted.
9. To serve, place a portion of the cooked and drained broken lasagna noodles into each bowl. Ladle the hot soup over the noodles. Garnish generously with shredded parmesan cheese and fresh parsley.

Variations

• Stovetop Method: Sauté the onion and garlic in a large pot, then add the seasonings, stock, and chicken. Simmer until the chicken is cooked (about 20-25 minutes), then proceed from step 4.
• One-Pot Noodles: For a creamier, thicker soup, add the broken uncooked lasagna noodles directly to the slow cooker in the last 30-45 minutes of cooking on HIGH (note: this will absorb more broth).
• Different Greens: Swap the fresh spinach for an equal amount of chopped kale or Swiss chard, adding it a few minutes earlier to ensure it becomes tender.
• Serving Style: For a deconstructed lasagna feel, serve the soup broth over a “nest” of lasagna noodles topped with a scoop of ricotta cheese instead of stirring the noodles in.

Tips for Success

• Shred Chicken Easily: For super tender, easy-to-shred chicken, ensure it reaches an internal temperature of 165°F and let it rest for 5 minutes before pulling.
• Avoid Curdling: Always temper the cream-cornstarch slurry by whisking it well and stirring it into the hot soup gradually, not all at once.
• Noodle Perfection: Cook the lasagna noodles separately to *al dente* and rinse them with cool water to stop the cooking process. This prevents them from becoming mushy and absorbing all the soup broth.
• Prep Ahead: Dice the onion, mince the garlic, and chop the sundried tomatoes the night before to make assembly in the morning a breeze.

Storage & Reheating

Store the soup (without the added noodles) and cooked noodles separately in airtight containers in the refrigerator for up to 4 days. To reheat, warm the soup portion on the stove or in the microwave, then combine with the noodles. The noodles will continue to soften if stored in the soup.

FAQ

Can I use frozen chicken breasts?

Yes, but add 1-2 hours to the cook time on LOW. Ensure the chicken is fully cooked and reaches 165°F internally before shredding.

What can I use instead of heavy cream?

While it provides the best richness, you can substitute with half-and-half. The soup will be slightly less creamy and thick.

Do I have to use cornstarch?

The cornstarch helps thicken the broth. If you omit it, the soup will be brothier. You can also make a slurry with 1-2 tablespoons of all-purpose flour as a substitute.

Can I add the noodles to the slow cooker?

Yes, but add the broken, uncooked noodles during the last 30-45 minutes on HIGH. Stir occasionally, as they will absorb a significant amount of liquid and make the soup very thick.

Is the crushed red pepper very spicy?

A 1/4 teaspoon adds a very mild, background warmth. You can easily omit it or increase it to 1/2 teaspoon for more noticeable heat.

Can I make this dairy-free?

For a dairy-free version, omit the heavy cream and parmesan. Use a full-fat canned coconut milk for creaminess and a nutritional yeast or vegan parmesan alternative for serving. The flavor profile will change but will still be delicious.