You want lasagna. You need a fast dinner. You have zero time for layering noodles and waiting for an oven. I get it. We’ve all been there, staring into the fridge at 6 PM with that “what now?” feeling.
That’s why this Low-Carb Instant Pot Lasagna Soup is your new weeknight superhero. It’s all the cozy, cheesy, meaty flavor of a classic lasagna. But it’s in a bowl, ready in under 30 minutes, and it cleans up in a snap. No fuss. All flavor. If you love this concept, you must try our Low Carb Cheesy Lasagna Soup for another guilt-free comfort meal.
Let’s ditch the stress and dig into the easiest dinner win you’ll have all week.
Recipe Overview
- Cuisine: Italian-Inspired
- Category: Soup / Main Dish
- Prep Time: 10 minutes
- Cook Time: 15 minutes (plus pressure time)
- Total Time: 30 minutes
- Servings: 6
Ultimate Guide to Low-Carb Instant Pot Lasagna Soup
This isn’t just another soup recipe. This is your ticket to a crazy-satisfying meal without the carb crash or the hour of cleanup. Why is this the only guide you need?
First, flavor. We build it right in the pot. Sausage, garlic, tomatoes, herbs—it all gets happy together under pressure. The taste is deep, like it simmered for hours.
Second, speed. The Instant Pot is magic for busy cooks. We’re talking hands-off cooking. You do a quick sauté, then let the machine do the work.
Finally, ease. One pot. Simple ingredients. A swap for zucchini noodles keeps it low-carb but still hearty. This guide cuts the fluff and gives you the good stuff: a perfect dinner, fast.
The Simple Ingredients
I bet you have half of this in your kitchen right now. That’s the beauty of this recipe. It’s built on pantry staples and fresh basics.
Low-Carb Instant Pot Lasagna Soup Recipe
The Simple Ingredients
Let’s Get Cooking! (The Step-by-Step)
Notes
Enjoy your homemade Low-Carb Instant Pot Lasagna Soup Recipe!
Nutrition Information
- 1 tbsp olive oil
- 1 lb Italian sausage (mild or hot), casing removed
- 1 medium yellow onion, diced
- 4 cloves garlic, minced
- 1 (24-oz) jar marinara sauce (sugar-free for strict low-carb)
- 4 cups chicken broth
- 1 (14.5-oz) can diced tomatoes, undrained
- 2 tsp Italian seasoning
- 1/2 tsp salt
- 1/4 tsp black pepper
- 2 medium zucchini, spiralized into “noodles”
- 1 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 1 cup ricotta cheese (for topping)
- Fresh basil, for garnish (optional)
Let’s Get Cooking! (The Step-by-Step)
Grab your Instant Pot. This is where the magic happens. Follow these steps and you’ll be eating in no time.
- Turn your Instant Pot to the “Sauté” function. Add the olive oil. Once it’s hot, add the Italian sausage. Break it up with a spoon and cook until browned. This takes about 5-6 minutes.
- Add the diced onion to the pot with the sausage. Cook for 3 more minutes, until the onion starts to soften. Now, stir in the minced garlic and cook for just 1 more minute. It will smell amazing.
- Hit “Cancel” to turn off the sauté function. This is important! Now, pour in the marinara sauce, chicken broth, and diced tomatoes. Add the Italian seasoning, salt, and pepper. Give everything a good stir.
- Secure the lid on the Instant Pot. Make sure the valve is set to “Sealing.” Select the “Manual” or “Pressure Cook” setting and set the timer for 5 minutes. The pot will take about 10 minutes to come to pressure.
- When the cook time is done, do a Quick Release. Carefully turn the valve to “Venting.” Let all the steam release.
- Once the pin drops, open the lid. Stir in your fresh zucchini noodles. They will cook perfectly in the hot soup in just 2-3 minutes. You want them tender but still with a little bite.
- Now, the best part! Stir in the shredded mozzarella and grated Parmesan until melted and gooey.
What to Serve With This Dish
This soup is a full meal in a bowl. But if you want to round it out, keep it simple and fast. For another fantastic one-pot meal that’s packed with veggies, our Creamy Garden Chicken Lasagna Soup is a cozy winner.
A big, green salad with a quick vinaigrette is perfect. So is a piece of crusty garlic bread for the non-low-carb folks at your table.
For a super easy side, just slice a baguette, drizzle with oil, and broil for 2 minutes. Done.
Make This Recipe Your Own (Quick Swaps)
Make this work for you! Use what you have. Try these easy swaps.
No sausage? Use ground beef, turkey, or chicken. Just add an extra pinch of Italian seasoning when you brown it.
Not low-carb? Add 8 oz of broken lasagna noodles or mafalda pasta in step 3 with the broth. You may need an extra 1/2 cup of broth.
Dairy-free? Skip the cheese stir-in. Top with a dollop of dairy-free ricotta or just some nutritional yeast for a cheesy flavor.
How to Store Leftovers (If You Have Any!)
This soup saves like a dream. Let it cool completely.
Store it in an airtight container in the fridge for up to 4 days. The zucchini noodles will soften more, but the flavor is still fantastic.
I don’t recommend freezing it with the zucchini noodles, as they get very mushy. Freeze the soup base before adding the zoodles, then add fresh ones when you reheat.
NUTRITION INFORMATION
- Serving Size: 1.5 cups
- Calories: ~420
- Fat: 30g
- Carbohydrates: 12g (Net Carbs: ~8g)
- Fiber: 4g
- Protein: 24g
(*Estimated values. Will vary based on specific ingredients used.)
FREQUENTLY ASKED QUESTIONS
Can I make this on the stove?
Absolutely! Brown the meat in a large pot. Follow the same steps, but simmer for 15-20 minutes after adding the broth. Add zoodles at the end to cook.
My soup is too thin. How can I thicken it?
Mix 1 tbsp of tomato paste with a little soup broth to make a slurry. Stir it back in. Let it simmer on “Sauté” for a few minutes. It will thicken right up.
What’s the best way to spiralize zucchini?
Use a spiralizer tool. Or, save time and buy pre-spiralized “zoodles” in the produce section of most grocery stores. So easy.
See? I told you it was simple. You just made a restaurant-worthy, comforting soup in less time than it takes for delivery to arrive. Your family will cheer. Your weeknight just got a whole lot brighter. For the ultimate family-friendly version, be sure to bookmark our Ultimate Comfort One-Pot Lasagna Soup.
This low-carb lasagna soup is my go-to for a reason. It works every single time. It fills you up without weighing you down. And it gives you your night back.
Go try this and win back your weeknight! Let me know how it goes by leaving a comment and rating below!
