Lasagna is one of the best dinners in the world and one of the least weeknight-friendly: layers, a baking dish, an hour in the oven, and a pan that takes real scrubbing. This one-pot creamy lasagna soup is my answer to that problem. It has everything people actually want from lasagna — savory sausage, a rich tomato broth, tender noodles, melted cheese, and a cool ricotta dollop on top — and it cooks in one pot in 40 minutes, with no layering and no baking dish.
The trick is broken lasagna noodles cooked right in the broth. They release just enough starch to give the soup body, they curl into perfect spoon-sized pieces, and they soak up the tomato and sausage flavor as they cook. Stir in spinach and cream at the end, melt in mozzarella and Parmesan off the heat, and ladle it into bowls with ricotta on top. It tastes like lasagna. It eats like soup. And there is exactly one pot to wash.
Why This Recipe Works
- All the lasagna flavor, none of the layering. Sausage, tomato, noodles, and three cheeses in one pot — no assembly, no baking dish, no waiting for the oven.
- Broken noodles do double duty. They are the pasta and the thickener: their starch gives the broth body without any flour or cornstarch.
- One pot, 40 minutes. Browning, simmering, and finishing all happen in the same pot, so cleanup is one pot and a cutting board.
- The ricotta stays cool. Dolloping it on top instead of stirring it in keeps the contrast that makes lasagna great: hot savory soup against cool creamy cheese.
- Forgiving and flexible. Mild or hot sausage, ground beef instead of sausage, extra spinach, more or less cream — the soup holds up to all of it.
Prep time: 10 minutes
Cook time: 30 minutes
Total time: 40 minutes
Servings: 6
Ingredients
- 1 tbsp olive oil
- 1 lb Italian sausage, casings removed (mild or hot)
- 1 medium yellow onion, diced
- 3 cloves garlic, minced
- 2 tbsp tomato paste
- 1 tsp Italian seasoning
- 1/2 tsp red pepper flakes, plus more for serving
- 1 can (28 oz) crushed tomatoes
- 4 cups chicken broth
- 8 oz lasagna noodles, broken into bite-size pieces
- 5 oz baby spinach (about 5 cups)
- 1 cup heavy cream
- 1 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese, plus more for serving
- 1 cup ricotta cheese, for dolloping
- 1 tsp kosher salt, plus more to taste
- 1/2 tsp black pepper
- 1/4 cup chopped fresh basil leaves, for serving
Instructions
- Heat the olive oil in a large pot or Dutch oven over medium-high heat. Add the sausage and break it into small crumbles with a wooden spoon. Cook 8 minutes, until browned all over.
- Add the onion and cook 3 minutes, until softened. Stir in the garlic, tomato paste, Italian seasoning, and red pepper flakes and cook 1 minute, until fragrant and the paste darkens a shade.
- Pour in the crushed tomatoes and chicken broth, scraping up all the browned bits from the bottom of the pot. Season with the salt and pepper. Bring to a boil, then reduce to a steady simmer.
- Stir in the broken lasagna noodles, pushing them under the liquid. Simmer 10 to 12 minutes, stirring now and then so the noodles do not stick, until al dente.
- Stir in the spinach a handful at a time and cook about 1 minute, just until wilted. Pour in the cream and simmer 2 minutes, until the soup is silky. Keep it below a boil.
- Take the pot off the heat. Stir in the mozzarella and Parmesan a handful at a time until melted and smooth. Taste and add more salt and pepper if needed.
- Ladle into warm bowls. Top each bowl with a generous dollop of ricotta, extra Parmesan, torn basil, and red pepper flakes if you like heat. Serve right away with crusty bread for the broth.
Equipment
You need a large pot or Dutch oven (at least 5 quarts, so the noodles have room), a wooden spoon for breaking up the sausage and scraping the pot, and a ladle. That is the whole list.
The Cheese Question: Dollop or Stir In?
Both, and for different reasons. The mozzarella and Parmesan go IN the soup: stirred in off the heat, they melt into the broth and make it rich and smooth. The ricotta goes ON TOP: a cool dollop on each bowl, never stirred in. That hot-soup-against-cool-ricotta contrast is the part that tastes most like real lasagna, and it disappears completely if you stir the ricotta into the pot. If you only have one cheese moment to get right, make it this one: ricotta on top, always.
Which Sausage, and Can I Swap It?
Mild Italian sausage is the safe all-family choice; hot Italian sausage gives the soup a background warmth that suits the red pepper flakes. Pork sausage gives the richest broth. Turkey Italian sausage also works and lightens the soup a little — brown it the same way and add an extra drizzle of olive oil if the pot looks dry. For ground beef instead of sausage, brown 1 lb ground beef, drain off the fat, and add 1 tsp Italian seasoning plus a pinch of fennel seed if you have it; fennel is the flavor that makes sausage taste like sausage. For a meat-free pot, skip the sausage, use vegetable broth, and add 8 oz sliced mushrooms with the onion plus 1 can (15 oz) white beans, drained, with the tomatoes.
Variations
- Extra greens: double the spinach, or swap half of it for chopped kale (add the kale with the noodles so it has time to soften).
- Spicier: use hot sausage and raise the red pepper flakes to 1 tsp, plus more at the table.
- Lighter: use turkey sausage and swap half the cream for whole milk. The soup will be a little thinner but still creamy.
- Gluten-free: use gluten-free lasagna noodles, broken the same way, and check the sausage and broth labels. Gluten-free noodles soften faster, so start checking 2 minutes early.
- Extra cheesy: stir in an extra 1/2 cup mozzarella with the cheese step, and pass more Parmesan at the table.
- No spinach? Leave it out, or use 2 cups frozen spinach, thawed and squeezed dry, stirred in with the cream.
What to Serve With It
Crusty bread is nearly mandatory — it is the tool for the last of the broth. Garlic bread is even better. A simple green salad with a sharp vinaigrette cuts the richness, and our One-Pot Creamy Tomato Soup fans will recognize the same one-pot logic. For a bigger spread, add our Easy One-Pan Sausage and Peppers as a second dish on a weekend, or keep it simple: soup, bread, salad, done.
Make Ahead
This soup is best the day it is made, because the noodles keep drinking up broth as it sits. If you want to get ahead, make the base through step 3 (sausage, aromatics, tomatoes, broth) up to 2 days ahead and refrigerate it. When you are ready to eat, bring the base back to a simmer and pick up at step 4 with the noodles — the soup will taste freshly made, because the noodles are. Do not cook the noodles ahead; reheated noodle soup turns to mush.
Storage, Reheating, and Freezing
Fridge: store leftovers in an airtight container for 3 to 4 days. The soup will thicken a lot as the noodles absorb broth — that is normal. Reheating: warm gently over low heat and stir in a splash of broth or water until it loosens back to soup. Taste and re-season; cold dulls salt. Freezing: freeze the base only, before the noodles and cream go in, for up to 3 months in freezer-safe containers. Thaw overnight in the fridge, bring to a simmer, and finish with fresh noodles, spinach, cream, and cheese. Do not freeze the finished soup: the noodles turn soft and the cream sauce can separate.
Frequently Asked Questions
Can I use regular lasagna noodles? Yes — that is what this recipe uses. Break dried lasagna noodles into bite-size pieces before they go in the pot. I do not recommend no-boil noodles here; they are already precooked and go soft too fast in soup.
Why is my soup so thick? The noodles absorb broth as they cook and as the soup sits. It is supposed to be hearty, not brothy. If it gets thicker than you like, stir in extra broth a splash at a time until it loosens.
Can I use jarred marinara instead of crushed tomatoes? Yes. One 24-oz jar of marinara replaces the crushed tomatoes and the tomato paste. Taste before adding salt, because jars vary a lot in seasoning.
Can I make it vegetarian? Yes. Skip the sausage, use vegetable broth, and add 8 oz sliced mushrooms with the onion plus 1 can (15 oz) white beans, drained, with the tomatoes. The rest of the recipe stays exactly the same.
Can I use ground beef instead of sausage? Yes. Brown 1 lb ground beef, drain the fat, and add 1 tsp Italian seasoning plus a pinch of fennel seed if you have it.
Can I make it in a slow cooker? I have not tested a slow-cooker version of this soup, so I will not guess at times. The stovetop version above is the one I stand behind.
Do the noodles really cook in the soup? Yes. Broken lasagna noodles cook in 10 to 12 minutes in simmering broth, and their starch thickens the soup at the same time. Stir now and then so they do not stick together.
How do I keep the cream from splitting? Keep the soup below a boil after the cream goes in, and stir the cheeses in off the heat. A hard boil is what splits a cream soup.
What if I do not have ricotta? A dollop of mascarpone works, or a spoonful of cottage cheese blended smooth. Or skip the dollop and pass extra mozzarella and Parmesan — the soup is still excellent, just less lasagna-like on top.
How long do leftovers last? 3 to 4 days in the fridge in an airtight container. Reheat gently with a splash of broth. Freeze the base only (before noodles and cream) for up to 3 months.
Is it gluten-free? Only with gluten-free lasagna noodles and checked labels on the sausage and broth. Everything else in the pot is naturally gluten-free.
What should I serve with it? Crusty bread or garlic bread first, plus a simple green salad. That is the whole meal.
Nutrition
Estimated per serving: about 750 calories, 27g protein, 33g carbohydrates, 46g fat. This is an estimate calculated from the ingredients listed and will vary with the sausage chosen, trimming, and portion size. Turkey sausage and less cream both bring the number down.
More One-Pot Dinners You Will Love
If this soup is your kind of dinner, try our Easiest One-Pot Creamy Tomato Soup, our Creamy One-Pan Chicken and Gnocchi Bake, our 30-Minute One-Skillet Chicken Piccata, or our Delicious and Easy Ground Beef Recipes for Dinner. Same promise every time: one pot, dinner handled.