Lasagna Soup — All the Comfort, None of the Fuss

Lasagna soup is everything you love about a classic lasagna — broken noodles, rich tomato sauce, and that dreamy cheesy topping — all made in one pot in under an hour. No layering, no baking dish, no stress.

Why You’ll Love This Recipe

I don’t know about you, but lasagna night at my house used to feel like a whole-day event. By the time I’d made the sauce, boiled the noodles, layered everything, and waited for it to bake, I was more tired than hungry! That’s exactly why this easy lasagna soup recipe has become my go-to on busy weeknights.

This version is vegetarian, but it tastes so hearty and satisfying that nobody ever misses the meat. The ricotta and mozzarella are served cold on the side and spooned right on top of each bowl — just like a scoop of creamy, melty goodness. Trust me, it’s a game-changer.

Ingredient Notes & Tips

Here’s what you need to know about the key players in this Italian soup recipe:

• Onion:  A small cooking onion works perfectly here. White, yellow, or sweet onion will all do the job. Dice it small so it cooks down quickly and blends into the broth.
• Garlic:  Three cloves is the sweet spot, but feel free to go up or down based on how much you love garlic. Fresh minced garlic gives the best flavor.
• Marinara Sauce:  Use your favorite jarred marinara sauce. The recipe calls for a full 24-oz jar. If yours is 23.5 oz, don’t worry — no need to open a second jar for half an ounce!
• Vegetable Broth:  This is what keeps the soup vegetarian. Chicken broth works just as well if that’s what you have on hand.
• Red Pepper Flakes:  These add just a little heat. If you or your family are sensitive to spice, leave them out entirely. The soup will still be delicious.
• Lasagna Noodles:  No need to pre-cook them! They cook right in the soup and soak up all that amazing tomato flavor as they soften. Break them into roughly 2-inch pieces — don’t stress about being perfect.
• Mozzarella:  This is important — use freshly shredded mozzarella, not the pre-shredded kind from a bag. Pre-shredded cheese has an anti-caking coating that prevents it from melting smoothly. Block mozzarella shredded at home makes all the difference.
• Ricotta:  Whole milk ricotta is creamier, but part-skim works great too. Mixed with the shredded mozzarella, it creates that signature lasagna cheesy layer everyone loves.
• Fresh Basil:  Don’t skip this! A few leaves scattered on top right before serving brightens the whole bowl. Dried basil in a pinch works, but fresh is worth it.

How to Make Lasagna Soup

This one-pot lasagna soup comes together quickly and easily. Here’s how to do it:

Step 1: Sauté the Aromatics

Heat 1 tablespoon of olive oil in a large pot over medium heat. Add the diced onion and minced garlic and cook, stirring occasionally, until the onion is soft and translucent — about 3 to 5 minutes. This step builds the flavor base for the whole soup, so don’t rush it.

Step 2: Add Tomato Paste and Spices

Stir in the tomato paste, Italian seasoning, and red pepper flakes. Mix well until everything is combined and the paste is warmed through, about 1 minute. This toasts the spices slightly and gives the broth a deeper, richer flavor.

Step 3: Pour in the Sauce and Broth

Add the marinara sauce and vegetable broth to the pot and stir to combine. While the soup is coming up to a boil, go ahead and break your lasagna noodles into 2-inch pieces and drop them right into the pot. No need to dirty another pan!

Step 4: Simmer Until Noodles Are Tender

Bring the soup to a boil, then reduce the heat and let it simmer for 25 to 30 minutes, or until the lasagna noodles are cooked al dente — soft but with just a little bite. Give it a stir every so often so the noodles don’t stick together. Add a few sprigs of fresh basil on top.

Pro Tip:  Want to speed things up? Use oven-ready lasagna noodles. They have rippled edges that give them more surface area, so they cook faster in the soup.

Step 5: Make the Cheese Topping

While the soup simmers, stir the ricotta and shredded mozzarella together in a small bowl. Keep this in the fridge until you’re ready to serve — cold cheese spooned onto hot soup is what gives you that classic lasagna feel in every bowl.

Step 6: Serve and Enjoy!

Ladle the soup into bowls and add a generous spoonful (or two!) of the cheese mixture right on top. It will gently warm and melt into the soup as you eat. Add fresh basil and dig in!

Variations to Try

One of the best things about this weeknight soup recipe is how easy it is to change up. Here are some fun ideas:

• Add Meat:  Brown Italian sausage or ground beef in the pot before sautéing the onion. Drain the fat, then continue with the recipe. This turns it into a hearty meat lasagna soup.
• Add Vegetables:  Toss in a handful of baby spinach or chopped zucchini during the last 5 minutes of cooking. Extra veggies blend right in and boost the nutrition.
• Spice It Up:  Double the red pepper flakes or add a pinch of cayenne if your family likes heat. You can also swirl in a little hot sauce before serving.
• Switch the Pasta:  No lasagna noodles? Use any pasta you have — penne, rotini, or bowtie all work well. Adjust the cook time based on your pasta’s package directions.
• Make It Gluten-Free:  Use your favorite gluten-free lasagna noodles and double-check that your marinara sauce and broth are gluten-free too.

How to Store Lasagna Soup

A heads-up on storage: the lasagna noodles soak up quite a bit of liquid as the soup sits. This soup is best enjoyed the first or second day after it’s made.

• Fridge:  Store the soup and cheese topping separately in airtight containers. The soup will keep for 2 to 3 days. When reheating, warm the soup on the stove or in the microwave until thoroughly hot, then add cheese.
• Freezer:  This soup is not ideal for freezing because the noodles tend to get mushy. If you want to freeze it, consider cooking the noodles separately and adding them fresh when reheating.

How to Serve Lasagna Soup

Serve this cheesy lasagna soup piping hot, straight from the pot. The cold cheese topping warms right up when it hits the hot broth, so spoon it on just before eating.

• Bread:  A slice of garlic toast or a crusty baguette on the side is the perfect companion for soaking up the sauce. Try it alongside a loaf of no-knead crusty bread!
• Salad:  A simple green salad or a classic Italian salad pairs beautifully. My Italian Tomato Mozzarella Salad is a wonderful match.
• For a Crowd:  This recipe is easy to double! Set up the soup in a big pot and put the cheese mixture in a serving bowl so everyone can help themselves.

Related Recipes You’ll Love

If this easy lasagna soup recipe has you in a cozy soup mood, here are a few more to try:

• Easy Hamburger Vegetable Soup:  Ready in just 30 minutes, this one-pot wonder is another weeknight favorite.
• Baked Rigatoni:  Another comfort meal with all of the Italian flavors you crave without the fuss.

Frequently Asked Questions

Do I have to cook the lasagna noodles before adding them to the soup?

Nope! The noodles cook right in the soup. They absorb the vegetable broth as they soften, which actually makes them more flavorful than boiling them separately.

Can I mix the cheese right into the soup?

You can, but the cheese tastes best when it’s kept cold and spooned onto each serving. It gives you that warm, creamy lasagna layer effect in every bite.

Can I use chicken or beef broth instead of vegetable broth?

Absolutely! Any broth works. Chicken broth adds a little more depth of flavor. Beef broth is especially good if you’re making the meat version.

Why is my soup so thick after storing it overnight?

The lasagna noodles soak up liquid as the soup sits. Simply stir in a splash of broth or water when reheating to get the consistency back to where you want it.

How spicy is this soup?

With ¼ teaspoon of red pepper flakes, the heat is very mild — just enough to notice a little warmth. If you’re sensitive to spice, simply leave the flakes out.

Soup’s On — Let’s Eat!

I hope this lasagna soup becomes a regular in your dinner rotation, just like it has in mine. It’s the kind of recipe you can throw together on a Tuesday night and feel like you really cooked something special.

Did you make this recipe? I’d love to hear how it turned out! Drop a comment below and leave a ⭐⭐⭐⭐⭐ star rating — it helps other readers find this recipe and truly makes my day!

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