I just finished making a pot of this Alfredo Lasagna Soup, and my kitchen smells absolutely divine. It’s like taking all the best parts of a creamy Alfredo and a hearty lasagna and turning them into one incredible soup.

I love how the rich, cheesy broth coats the tender pasta, sausage, and vegetables in every spoonful. This is the ultimate comfort food, and it came together so quickly. I can’t wait to curl up on the couch with a big, warm bowl of it.

Ingredients

Here is everything you will need to whip up this incredibly creamy and satisfying soup.

1/2 lb ground sausage – I prefer using a mild Italian sausage for its savory flavor, but hot sausage works great if you like a little kick.
1 small onion, chopped – This builds the aromatic foundation of the soup, adding a subtle sweetness.
8 ounces mushrooms, sliced – Use cremini or white button mushrooms; they add a wonderful earthy depth to the broth.
2 cloves garlic, minced – Freshly minced garlic is always best for a potent, aromatic flavor that you just can’t get from a jar.
4 cups baby spinach – Use fresh baby spinach. It wilts down perfectly into the soup without becoming stringy like frozen spinach can.
5 cups low-sodium chicken broth – Using a low-sodium broth allows you to control the saltiness of the final dish.
5 lasagna noodles, broken – Break them into bite-sized pieces before cooking. They give the soup its classic lasagna feel.
1 teaspoon dried oregano – This herb adds a classic Italian-American flavor that is essential for anything “lasagna.”
1/2 teaspoon dried basil – Basil brings a touch of sweetness and pepperiness that complements the other ingredients.
3 tablespoons butter – This is the start of your creamy roux for the Alfredo sauce component.
3 tablespoons flour – All-purpose flour works perfectly to thicken the butter and milk mixture.
1 cup milk – Whole milk will give you the creamiest, richest result for the sauce.
1 cup Parmesan, grated – Always grate your own Parmesan from a block. It melts much more smoothly than pre-shredded cheese.

Note: This recipe makes enough for about 4 generous servings, perfect for a small family dinner.

Variations

One of the best things about this soup is how easy it is to customize. Here are a few ideas to get you started.

Make it Spicy: Use hot Italian sausage or add a pinch of red pepper flakes along with the garlic for a welcome bit of heat.
Change the Protein: Ground chicken, turkey, or even lean ground beef can be used in place of sausage. If using beef, add a teaspoon of Italian seasoning to boost the flavor.
Add More Veggies: Feel free to toss in other vegetables like chopped bell peppers, zucchini, or sun-dried tomatoes for extra flavor and nutrients.
Different Pasta: If you don’t have lasagna noodles, any short pasta like rotini, penne, or bow ties will work just as well.
Lighter Version: To cut down on fat, you can use milk with a lower fat percentage and opt for Neufchâtel cheese in place of some of the Parmesan.

Cooking Time

Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes

Equipment You Need

Large Pot or Dutch Oven: This is for browning the sausage and building the soup all in one place.
Small Saucepan: You’ll need this to make the separate creamy Alfredo sauce before adding it to the soup.
Whisk: Essential for creating a smooth, lump-free cheese sauce.
Cutting Board and Knife: For chopping the onion and slicing the mushrooms.

How to Make Alfredo Lasagna Soup?

This delicious soup comes together in just a few straightforward steps. You’ll start by building the soup base in one pot while you create the creamy Alfredo sauce in another. Then, you simply combine them for a truly decadent and flavorful meal that tastes like it took hours to prepare.

Step 1: Brown the Sausage and Veggies

In a large pot or Dutch oven, brown the ground sausage over medium heat, breaking it apart with a spoon. Once it’s cooked, add the chopped onion and sliced mushrooms.

Continue to cook for another 5-6 minutes until the vegetables have softened. Finally, stir in the minced garlic and fresh spinach, and cook for just one more minute until the spinach has wilted.

Step 2: Simmer the Soup Base

Pour the chicken broth into the pot with the sausage and vegetable mixture. Bring it to a simmer and let it cook for about 5 minutes to allow the flavors to start melding together.

Next, add the broken lasagna noodles, dried oregano, and dried basil. Bring the soup to a low boil and cook for 10-12 minutes, or until the pasta is tender.

Step 3: Prepare the Creamy Alfredo Sauce

While the soup simmers, melt the butter in a separate small saucepan over medium-low heat. Whisk in the flour and cook for about a minute, stirring constantly, until the mixture is bubbly.

Slowly pour in the milk, whisking continuously until the sauce is smooth and begins to thicken, which should take about 3-5 minutes.

Step 4: Combine and Finish

Turn off the heat under the milk mixture and slowly whisk in the grated Parmesan cheese until it’s completely melted and creamy. If the cheese isn’t melting well, you can return the pan to very low heat.

Once the cheese sauce is smooth, slowly pour it into the large pot of soup, whisking as you go to fully incorporate it. Serve immediately.

Additional Tips for Making this Recipe Better

I’ve made this recipe quite a few times, and I’ve learned a couple of things that take it from great to absolutely amazing.

To make the soup extra rich, I stir in about 1/4 cup of heavy cream along with the Parmesan cheese sauce at the end. It adds a luxurious finish.
Don’t overcook the noodles! They will continue to soften in the hot broth as the soup sits, so it’s best to cook them just until al dente.
I find that a pinch of nutmeg in the Alfredo sauce really enhances the cheesy flavor. It’s a classic trick that works wonders here.
For a brighter flavor, I like to finish the soup with a squeeze of fresh lemon juice right before serving. It cuts through the richness and balances the flavors perfectly.

How to Serve Alfredo Lasagna Soup?

This soup is a hearty meal all on its own, but it’s even better with some accompaniments. Serve it hot in deep bowls, garnished with a sprinkle of extra grated Parmesan cheese and some fresh chopped parsley for a pop of color.

It’s absolutely delicious with a side of crusty garlic bread for dipping into the creamy broth. A simple side salad with a light vinaigrette also pairs nicely to balance the richness of the soup.

Nutritional Information

Here is an approximate nutritional breakdown for a serving of this soup.

Calories: 621
Protein: 32g
Carbohydrates: 46g
Fat: 35g

Make Ahead and Storage

This soup is great for planning ahead, though it’s best enjoyed fresh.

To Store: Let the soup cool and store it in an airtight container in the refrigerator for up to 3 days. Note that the noodles will absorb more liquid as they sit, so the soup will thicken over time.

To Freeze: Due to the creamy dairy base, freezing is not highly recommended as the texture can become grainy upon reheating. If you must freeze it, do so in an airtight container for up to one month.

To Reheat: Gently reheat the soup in a pot on the stovetop over low heat, stirring occasionally. You may need to add a splash of milk or chicken broth to thin it back out to your desired consistency. Avoid boiling, as this can cause the sauce to separate.

Why You’ll Love This Recipe?

There are so many things to adore about this comforting and creative soup. Here are just a few reasons you’ll want to make it again and again.

It’s unbelievably quick and easy. You get all the flavor of a complex lasagna in a simple, one-pot soup that is ready in just 30 minutes, making it perfect for a weeknight.
Pure comfort in a bowl. The combination of creamy Alfredo sauce, savory sausage, and tender pasta is the definition of hearty, satisfying comfort food.
It’s a creative twist on a classic. This recipe takes two beloved Italian-American dishes and combines them into a unique and delicious meal that will impress everyone.
Customizable to your tastes. You can easily swap out the protein, add more vegetables, or adjust the spice level to make this soup perfectly suited to your preferences.