Silky noodles, savory sausage, and a rich tomato broth make Instant Pot lasagna soup feel like a shortcut that doesn’t taste like one. It has the same comfort as a pan of baked lasagna, but the spoonable format means the pasta drinks up the broth instead of getting buried under layers that can go dry. The best bowls land somewhere between soup and a saucy pasta dinner, with ricotta melting into the top and Parmesan adding that salty finish people always chase with one more bite.
The part that makes this version work is the order of the ingredients. The sausage gets browned first so the broth starts with real depth, then the noodles go in on top without stirring so the pot can come to pressure without scorching. That little detail matters more than anything else here. Once the pressure cooking is done, the cream goes in at the end, where it turns the broth from tomato-red and sharp into something rounder and more luxurious.
If you’ve had lasagna soup turn gummy, watery, or burn at the bottom, the method below will help you avoid all three. The notes after the recipe walk through the noodle placement, the ricotta topping, and the small changes you can make if you want a milder or richer bowl.
The noodles stayed perfectly tender and the pot never gave me a burn notice because I layered everything exactly like you said. The ricotta on top made it taste like baked lasagna in a bowl.
Save this Instant Pot lasagna soup for the nights when you want all the lasagna comfort with less effort and one pot to wash.
The Noodle Layer That Keeps the Pot from Burning
The burn warning on an Instant Pot usually comes from starch settling on the bottom and sticking before the pot can build pressure. With lasagna soup, that risk goes up because the noodles are thick and they release starch fast. The fix is simple: build the broth underneath, then lay the broken noodles across the top and leave them alone. They cook just fine from the steam and liquid below, and they don’t glue themselves to the liner the way they do when stirred in early.
That order also keeps the noodles from overworking the broth. Stirring them in before pressure cooking can make the soup cloudy and heavy, especially if the pot sits a minute or two before sealing. Keep the surface calm, lock the lid, and let the Instant Pot do the work.
- Italian sausage — This brings the main seasoning and enough fat to carry the soup. Mild or hot both work. If you’re using turkey sausage, add a little olive oil at the start because lean sausage can leave the base flat.
- Yellow onion and garlic — These build the savory backbone. Dice the onion small so it softens quickly during sautéing, and cook the garlic just until it smells fragrant. If it browns too much, it can turn bitter under pressure.
- Crushed tomatoes — Crushed tomatoes give you a broth that tastes like lasagna sauce without becoming too thick. Tomato sauce can work in a pinch, but it usually makes the soup heavier and less bright.
- Lasagna noodles — Broken noodles are the whole point here. Break them into rough pieces, not tiny shards, so they keep that lasagna feel. No-boil noodles also work, but they can soften faster, so check them as soon as the pressure releases.
- Heavy cream, ricotta, and Parmesan — The cream smooths out the tomato base, while ricotta and Parmesan give the bowl that lasagna finish. Use whole-milk ricotta if you can; part-skim works, but it won’t melt as luxuriously into the hot soup.
The 5 Minutes Under Pressure That Matter Most
Brown the Sausage First
Use the sauté function to cook the sausage with the onion until the meat is no longer pink and the onion starts turning translucent. Add the garlic near the end so it perfumes the pot without scorching. If the sausage leaves a lot of fat behind, drain off a little, but leave enough in the pot to coat the bottom and carry the flavor of the tomato broth.
Layer the Pot Without Stirring
Pour in the crushed tomatoes, broth, and Italian seasoning, then lay the broken noodles on top. Do not stir. The noodles need to sit above the thicker tomato mixture so the pot can come up to pressure cleanly. If you mix everything together here, the starch settles and the bottom can scorch before the noodles even soften.
Pressure Cook and Release Fast
Cook on high pressure for 5 minutes, then quick release. That’s just enough time for the noodles to turn tender without collapsing into mush. If the release is delayed, the pasta keeps cooking in the hot broth and can go past the sweet spot fast, especially if the pieces are small.
Finish with Cream and Top Generously
Stir in the heavy cream after the pressure is off. If you add it before cooking, the dairy can separate and dull the tomato flavor. Ladle the soup into bowls, then top with ricotta and Parmesan so they melt in ribbons on the surface instead of disappearing into the pot.
How to Adapt It When You Want It Richer, Lighter, or Meatless
Make it dairy-free
Skip the heavy cream and use an unsweetened oat or cashew cream at the end. Leave off the ricotta and Parmesan, or finish each bowl with a dairy-free cheese that melts well. The broth will be a little sharper, but the tomato and sausage still carry the dish.
Make it gluten-free
Use gluten-free lasagna noodles, but watch them closely because they can soften faster than wheat noodles. If you want the cleanest texture, cut the pressure time down by 1 minute and let the soup sit for a couple of minutes before serving. The broth stays the same, but the noodles won’t hold up quite as long in leftovers.
Use Italian chicken sausage for a lighter bowl
Chicken sausage keeps the flavor but cuts some of the richness from the broth. Because it’s leaner than pork sausage, you may need a splash of olive oil to get a good sauté at the start. The result tastes a little cleaner and less heavy, which works well if you want a weeknight soup rather than a fully indulgent bowl.
Storage and Reheating
- Refrigerator: Store in an airtight container for up to 4 days. The noodles will keep soaking up broth, so expect the soup to thicken.
- Freezer: It freezes, but the pasta softens after thawing. For the best texture, freeze the soup base without the noodles, then cook fresh noodles when you reheat.
- Reheating: Warm it gently on the stove over medium-low heat with a splash of broth or water. The common mistake is boiling it hard, which breaks the cream and turns the noodles mushy.
Answers to the Questions Worth Asking
Instant Pot Lasagna Soup
Ingredients
Equipment
Method
- Set the Instant Pot to Sauté and cook the Italian sausage with the diced yellow onion and minced garlic until browned, stirring occasionally, about 5 minutes. Visual cue: the sausage should lose its pink color and the onion should look softened.
- Add the crushed tomatoes, chicken broth, and Italian seasoning, then place the broken lasagna noodles on top without stirring. Visual cue: the noodles should sit as a layer above the liquid (no mixing into the broth).
- Seal the lid and pressure cook on high for 5 minutes. Visual cue: the Instant Pot display should read the full pressure-cook time before the countdown ends.
- Use a quick release to stop the cooking. Visual cue: the floating valve drops and the steam vents shortly after.
- Stir in the heavy cream until the broth looks silky and evenly tinted. Visual cue: you should see a smooth, lighter-red consistency with no cream streaks.
- Top the soup with ricotta and grated Parmesan. Visual cue: the cheeses should sit on top and begin to soften from the hot soup rather than fully disappear.