Lasagna soup hits the bowl with all the comfort of baked lasagna and none of the layering or oven time. The broth turns rich from the sausage and marinara, the noodles soften into the pot, and the ricotta melts in spoonfuls so every bite tastes creamy, tomatoey, and deeply satisfying. It’s the kind of dinner that feels like a shortcut until you taste it, then it just feels smart.
What makes this version work is how little it asks of you. Jarred marinara already carries the garlic, herbs, and tomato base, so there’s no need to build a sauce from scratch. Chicken broth stretches it into soup without washing out the flavor, and broken lasagna noodles give you that familiar pasta shape without any extra fuss. The sausage does most of the heavy lifting, so use one with good seasoning — it’s the backbone of the whole pot.
Below, I’ve included the one timing detail that keeps the noodles from turning mushy, plus a few easy ways to change the finish depending on what you’ve got in the fridge.
The noodles stayed perfectly tender and the ricotta on top made it taste like lasagna without the layering. I used mild sausage and it still had tons of flavor after just 20 minutes.
Save this 5 Ingredient Lasagna Soup for the nights when you want all the cozy lasagna flavor without the bake time.
The Short Ingredient List That Still Tastes Like Lasagna
- Italian sausage — This is the flavor engine. It seasons the whole pot as it browns, so use sausage you like on its own. Mild or hot both work; hot gives the soup more backbone. If you swap in turkey sausage, the soup will still work, but it needs a little extra salt and maybe a pinch of fennel or Italian seasoning to bring it back to life.
- Marinara sauce — A good jar does the job here because it already has tomato, garlic, and herbs built in. Choose one you’d actually eat over pasta. If your sauce tastes flat straight from the jar, it’ll taste flat in the soup too. A thicker marinara gives the best body.
- Chicken broth — This loosens the sauce into soup without thinning the flavor too much. Low-sodium broth is the safest pick since the sausage and marinara both bring salt. If you only have regular broth, wait until the end to season.
- Lasagna noodles — Breaking them into pieces gives the soup that lasagna feel without extra work. Don’t add them too early or they’ll overcook and thicken the pot into pasta stew. Wide noodles hold up better than thinner pasta shapes, which tend to disappear into the broth.
- Ricotta cheese — The ricotta is what makes the bowl taste like lasagna instead of just tomato soup with pasta. Dollop it on at the end so it stays creamy and soft. If you want a stronger cheese finish, add parmesan or mozzarella on top, but keep the ricotta — it gives the right texture.
The 10 Minutes That Keep the Noodles from Going Soft
Browning the Sausage First
Cook the sausage over medium-high heat until it loses its pink color and picks up browned bits on the bottom of the pot. Those browned bits matter; they’re the first layer of flavor in the soup. Drain off excess fat if the pot looks greasy, but leave a little behind so the base still tastes rich. If the sausage goes in pale and soft, the whole soup tastes flatter than it should.
Building the Broth and Sauce
Stir in the marinara and broth and bring the pot to a real boil before the noodles go in. That boil helps the pasta cook evenly right away instead of sitting in lukewarm liquid and turning gummy. Scrape the bottom as you stir so the browned sausage bits dissolve into the broth. If the soup tastes thin at this stage, it usually means the marinara was watery, not that you need more ingredients.
Cooking the Noodles in the Pot
Add the broken lasagna noodles and cook until they’re tender, usually 10 to 12 minutes, stirring now and then so they don’t stick together. They should still have a little bite when you pull one out, because they’ll keep softening in the hot soup after you turn off the heat. If you walk away and let them simmer too long, they’ll swell and make the broth starchy. This is the point where most lasagna soups go wrong.
Finishing with Ricotta
Ladle the soup into bowls first, then top each serving with a generous spoonful of ricotta. Adding it to the bowl instead of the pot keeps it creamy and distinct instead of melting into the broth. A little mozzarella or basil on top gives you the classic lasagna finish without turning the soup heavy. Parmesan works best as the last sprinkle, after the ricotta is on.
How to Adjust This Bowl for Different Kitchens and Different Eaters
Make It Spicier with Hot Sausage
Hot Italian sausage gives the broth a sharper, more savory finish without changing the method. If you like a little heat but don’t want the whole pot spicy, use half hot and half mild sausage. Red pepper flakes work too, but sausage heat tastes deeper and blends better with the marinara.
Make It Dairy-Free Without Losing the Comfort
Skip the ricotta and finish each bowl with a dairy-free pesto or a drizzle of olive oil for richness. The soup itself already has enough body from the sausage and pasta, so you won’t lose the base of the dish. You will lose that creamy lasagna finish, though, so add a little extra parmesan-style dairy-free topping if you have it.
Use Gluten-Free Pasta, but Add It Late
Gluten-free lasagna noodles can work, but they soften faster and break apart more easily than wheat pasta. Add them a little later than usual and start checking for doneness early. If you’re planning leftovers, cook the noodles separately and add them to each bowl so the soup doesn’t turn thick and grainy overnight.
How to Stretch It for More People
You can add an extra cup or two of broth if you need more servings, but don’t dilute it too much or the soup loses its lasagna-like depth. A second jar of marinara gives better results than extra water or broth because it keeps the tomato flavor concentrated. If you’re serving a crowd, set out the ricotta and garnishes separately so everyone can top their bowl the way they like.
Storage and Reheating
- Refrigerator: Store for up to 4 days. The noodles will keep soaking up broth, so the soup gets thicker by day two.
- Freezer: It freezes, but the noodles soften after thawing. For the best texture, freeze the soup without the pasta and add fresh cooked noodles when reheating.
- Reheating: Warm it gently on the stove over medium-low heat with a splash of broth. High heat can make the noodles too soft and can cause the soup to tighten up too much as it simmers.
Questions I Get Asked About This Recipe
5 Ingredient Lasagna Soup
Ingredients
Equipment
Method
- Heat a large pot over medium-high heat and brown the Italian sausage, breaking it up as it cooks; drain off excess fat.
- Pour in the marinara sauce and chicken broth, then stir to combine until the mixture looks evenly red.
- Bring the soup to a boil over high heat, keeping it actively bubbling.
- Add the broken lasagna noodles and cook for 10-12 minutes, stirring occasionally, until the noodles are tender.
- Taste and season with salt and pepper if needed, adjusting to your preference.
- Ladle the soup into bowls and top each with a generous spoonful of ricotta.
- Optionally top with shredded mozzarella and fresh basil right before serving.
