Keto Lasagna Soup: A Cozy Low-Carb Twist on an Italian Classic

If there’s one thing I’ve learned in my kitchen adventures, it’s this: comfort food doesn’t have to come with a side of guilt. Enter Keto Lasagna Soup, the creamy keto recipe that proves low-carb living can still feel like a warm hug in a bowl. This Italian keto comfort food takes everything you love about traditional lasagna—the rich sauce, the creamy cheese, the hearty sausage—and transforms it into a soul-satisfying soup that’s both waistline-friendly and downright delicious.

Now, I know what you’re thinking: “Soup instead of pasta? Olivia, have you lost your marbles?” Trust me, I had the same hesitation. But after the first spoonful, I was hooked. It’s savory, creamy, and so cozy that you’ll forget all about those lasagna noodles. Perfect for busy moms juggling soccer practice and work deadlines, or anyone craving a hearty meal without carb overload, this recipe is a weeknight lifesaver.

So, tie on that apron, grab your Dutch oven, and let’s simmer our way into pure comfort—without ever turning on the oven.

Why You’ll Love This Keto Lasagna Soup

  • It’s packed with all the classic lasagna flavors without the carbs.

  • Creamy, cheesy, and hearty—everything comfort food should be.

  • Family-friendly and perfect for weeknight dinners.

  • A low-carb soup that makes leftovers just as exciting as the first bowl.

Ingredients

  • 28 g (2 tbsp) butter

  • 1 medium onion, diced

  • 2 cloves garlic, minced

  • Sea salt and freshly ground black pepper, to taste

  • 450 g (1 lb) ground Italian sausage

  • 960 ml (4 cups) vegetable stock

  • 590 g (2½ cups) marinara sauce

  • 120 ml (½ cup) heavy cream

  • 115 g (½ cup) full-fat ricotta cheese, plus more for garnish

  • 115 g (½ cup) shredded Parmesan cheese, for garnish

  • 15 g (¼ cup) chopped fresh basil, for garnish

Steps

  1. In a Dutch oven, melt butter over medium-low heat.

  2. Add onion, garlic, salt, and pepper. Sauté 5–7 minutes until fragrant.

  3. Increase heat to medium, add sausage, and cook 8–10 minutes until browned. Drain grease.

  4. Stir in stock and marinara sauce. Bring to a boil, then reduce to low.

  5. Mix in heavy cream and ricotta until smooth.

  6. Let simmer 30–45 minutes, stirring occasionally.

  7. Taste, adjust seasoning, and ladle into bowls.

  8. Top with extra ricotta, Parmesan, and basil before serving.

Tips for Perfecting This Creamy Keto Recipe

  • Don’t rush the simmer. Letting it bubble gently brings out that deep, cozy flavor.

  • Use quality marinara. Since it’s the backbone of this dish, go for a sugar-free one with rich tomato flavor.

  • Make it spicier. Add crushed red pepper flakes if your crew loves a little heat.

  • Cheese is your friend. A little extra Parmesan or ricotta never hurt anyone—this is comfort food, after all.

A Personal Story from My Kitchen

The first time I made this soup was on a rainy Tuesday night when my kids declared they were “so over chicken.” I needed something fast, cozy, and new—but also something that wouldn’t send me spiraling into a carb coma. That’s when this recipe was born.

I pulled together sausage, marinara, and cheese from the fridge, tossed it all in a pot, and crossed my fingers. By the time the house filled with that garlicky, tomato-rich aroma, I knew we had a winner. My husband even asked if I’d secretly layered lasagna somewhere in the kitchen! It’s since become our go-to for chilly nights, and honestly, it’s one of those meals that just feels like a hug from the inside out.

Keto Lasagna Sou

What to Serve with Keto Lasagna Soup

This soup is hearty enough to stand on its own, but if you want to round out the meal:

  • Keto garlic breadsticks made from almond flour are a perfect dunking partner.

  • A fresh green salad with olive oil and balsamic vinegar keeps it light and balanced.

  • For guests, a charcuterie board with olives and cured meats makes this dinner feel like a mini Italian feast.

How to Store

  • Refrigerator: Store in an airtight container for up to 4 days. Reheat gently on the stovetop or in the microwave.

  • Freezer: Ladle cooled soup into freezer bags or containers, leaving a little room at the top. Freeze for up to 3 months.

  • Reheating tip: Add a splash of broth or cream when reheating to bring back that silky texture.

FAQs

Can I substitute the sausage?

Absolutely! Ground beef or turkey works well, though sausage gives the richest flavor.

Is this low-carb soup really filling without pasta?

Yes! The cream, ricotta, and sausage make it surprisingly hearty—you won’t miss the noodles.

Can I make this ahead of time?

Definitely. It actually tastes even better the next day after the flavors meld.

What if I don’t like ricotta?

Swap it for cream cheese or mascarpone for a different creamy twist.

Bringing It All Together

When life calls for cozy comfort but your body says “skip the carbs,” Keto Lasagna Soup is the perfect answer. It’s a creamy keto recipe that delivers on flavor, warmth, and satisfaction—without the heaviness of traditional pasta. Whether you’re feeding a family or just treating yourself after a long day, this Italian keto comfort food will have you coming back for seconds (and maybe even thirds). So go ahead—ladle up some happiness and enjoy the best of lasagna, spoon by spoon.

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Keto Lasagna Soup

Keto Lasagna Soup


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  • Author: Olivia Hartwellen
  • Total Time: 1 hour 20 minutes
  • Yield: 10 servings (~210 kcal each) 1x
  • Diet: Gluten Free

Description

This Keto Lasagna Soup transforms the rich, cheesy flavors of classic lasagna into a creamy, low-carb soup. Made with Italian sausage, marinara, ricotta, and Parmesan, it’s hearty, comforting, and perfect for cozy weeknight dinners—without the carbs.


Ingredients

Scale
  • 28 g (2 tbsp) butter

  • 1 medium onion, diced

  • 2 cloves garlic, minced

  • Sea salt and freshly ground black pepper, to taste

  • 450 g (1 lb) ground Italian sausage

  • 960 ml (4 cups) vegetable stock

  • 590 g (2½ cups) marinara sauce (sugar-free)

  • 120 ml (½ cup) heavy cream

  • 115 g (½ cup) full-fat ricotta cheese, plus more for garnish

  • 115 g (½ cup) shredded Parmesan cheese, for garnish

  • 15 g (¼ cup) chopped fresh basil, for garnish


Instructions

  • In a Dutch oven, melt butter over medium-low heat.

  • Add onion, garlic, salt, and pepper; sauté 5–7 minutes until fragrant.

  • Increase heat to medium, add sausage, and cook 8–10 minutes until browned. Drain excess grease.

  • Stir in stock and marinara sauce. Bring to a boil, then reduce heat to low.

  • Mix in heavy cream and ricotta; stir until smooth.

  • Simmer gently 30–45 minutes, stirring occasionally.

  • Adjust seasoning, then ladle into bowls.

  • Top with extra ricotta, Parmesan, and fresh basil before serving.

Notes

Simmer gently to deepen flavor without curdling the cream.

Use high-quality, sugar-free marinara for the best results.

Add red pepper flakes for heat.

Garnish generously with extra cheese for maximum comfort.

  • Prep Time: 20 minutes
  • Cook Time: 1 hour
  • Category: Soup
  • Method: Stovetop / Simmer
  • Cuisine: Italian-American

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