One-Pot Keto Lasagna Soup (Ready in 30 Minutes)
This keto lasagna soup loads every bowl with the meaty, cheesy flavor of classic lasagna, minus the pasta and the fuss. It all happens in a single pot on the stovetop.
In about 30 minutes you get a rich tomato broth, Italian sausage and beef, plus melty ricotta and mozzarella on top. The kind of dinner that feels like a Sunday project on a Tuesday night.
What Makes This Soup Taste Like Lasagna
The broth carries that slow-simmered Italian depth without hours on the stove. Italian sausage and a bit of beef build a savory base, while a splash of cream turns the tomato broth silky instead of thin.
A spoonful of cold ricotta and a handful of shredded mozzarella land right on top of each hot bowl. As they soften into the soup, you get those gooey, creamy pockets you expect from a pan of lasagna. It’s the reason this soup stays in our rotation when comfort food calls but nobody wants to layer noodles.
Ingredients
- 1 lb ground Italian sausage, mild or hot: Chicken sausage gives the most classic flavor, but turkey sausage works too.
- 1/2 lb lean ground beef: adds richness and a sturdier meat bite; use all sausage if you prefer.
- 1/2 medium yellow onion, diced: a sweet onion or white onion is fine.
- 3 cloves garlic, minced: fresh garlic wakes up the whole soup.
- 2 tbsp tomato paste: deepens the tomato flavor without extra liquid.
- 1 can (14.5 oz) crushed tomatoes: look for no-sugar-added to keep it keto.
- 4 cups chicken broth: beef broth works if you want a bolder note.
- 1 tsp dried Italian seasoning: a blend of oregano, basil, and thyme is all you need.
- 1/2 tsp red pepper flakes, optional: a little heat balances the creaminess.
- 1/2 cup heavy cream: makes the broth velvety and rich.
- Salt and black pepper: season at every stage.
- For serving: 1 cup whole milk ricotta cheese, 1 cup shredded mozzarella, 1/4 cup grated Parmesan, fresh basil leaves.
Variations / Substitutions
- Meat swap: Ground turkey or chicken can replace the sausage; add an extra teaspoon of Italian seasoning and a pinch of fennel seed to mimic that sausage flavor.
- Dairy-free: Swap the heavy cream for full-fat canned coconut milk and use a dairy-free ricotta. Mozzarella alternatives melt best when you let the soup cool slightly before topping.
- Spice level: Use hot Italian sausage or double the pepper flakes for serious heat. For a milder soup, sweet sausage and no flakes keep it gentle.
- Herb finish: A few torn fresh basil leaves or a light sprinkle of fresh oregano right before serving brightens everything.
Cheesy Keto Pizza Casserole makes an easy main to round out the meal with this soup.
How to Make One-Pot Keto Lasagna Soup
Step 1: Brown the Meat and Aromatics
Place a large pot or Dutch oven over medium-high heat. Add the 1 lb Italian sausage and 1/2 lb ground beef, breaking them up with a wooden spoon. Cook for about 6 minutes, until no pink remains and the meat has browned.
Stir in the 1/2 diced onion and 3 minced garlic cloves and cook another 2 minutes. You’ll smell the garlic turn fragrant and the onion will soften and turn translucent. The bottom of the pot will have some browned bits, and that’s exactly what you want for flavor.
Step 2: Simmer the Soup Base
Stir in the 2 tbsp tomato paste and let it cook for 1 minute to caramelize slightly. Pour in the 14.5 oz crushed tomatoes and 4 cups chicken broth, then scrape up those browned bits from the bottom. Add the 1 tsp Italian seasoning, the 1/2 tsp red pepper flakes if you’re using them, plus a pinch of salt and black pepper.
Bring the soup to a boil, then lower the heat so it simmers gently. Let it cook uncovered for 15 minutes. The broth will turn a deep red and thicken just a little, and your kitchen will smell like a lasagna dinner.
Step 3: Stir in the Cream
Take the pot off the heat. Slowly pour in the 1/2 cup heavy cream while stirring gently. The moment the cream hits the soup, the color changes from bright tomato red to a softer blush, and the texture turns silky.
Keep the soup over low heat if you’re not serving right away, but avoid a hard boil from here on. Boiling can cause the cream to separate, so a gentle warmth is all it needs.
Step 4: Ladle and Top with Ricotta and Mozzarella
Ladle the hot soup into bowls. Spoon a generous dollop of ricotta onto each, then scatter a handful of shredded mozzarella and a sprinkle of Parmesan right over the top. The heat from the soup will start melting the cheese into creamy strands and soft puddles.
Add a few torn basil leaves and a crack of black pepper. Serve right away while the cheese is stretchy and the soup is steaming. Every spoonful pulls up that lasagna combo of meaty broth, creamy ricotta, and gooey mozzarella.
A Few Tips Before You Start
- Let the heavy cream sit at room temperature for about 10 minutes before you add it. Cold cream is more likely to curdle when it hits hot soup, even off the heat.
- If you want a thicker, more stew-like texture, use an immersion blender to briefly purée a small portion of the soup in the pot before adding the cream. This works because you keep all the meaty bits but borrow body from the tomatoes and onions.
- For a rounder flavor, add a tablespoon of unsalted butter when you heat the soup to serve. It smooths out any sharp tomato notes without watering things down.
Scale this soup up for a crowd:
| Servings | Ground Sausage | Ground Beef | Chicken Broth |
|---|---|---|---|
| 4 | 1 lb | 1/2 lb | 4 cups |
| 6 | 1.5 lbs | 3/4 lb | 6 cups |
| 8 | 2 lbs | 1 lb | 8 cups |
Storing Leftovers
- Refrigerate: Cool the soup completely, then store it without the cheese toppings in an airtight container for up to 4 days. The broth will thicken as it sits; add a splash of broth or water when you reheat it.
- Reheating: Warm leftovers gently over low heat, stirring now and then. A hard boil can cause the cream to break, so keep the heat patient. Add fresh ricotta and mozzarella only after the soup is hot.
What to Serve with One-Pot Keto Lasagna Soup
A simple arugula salad with lemon vinaigrette cuts right through the richness of the soup. The peppery greens and bright acid keep the meal from feeling too heavy. If you want something to dip, low-carb garlic breadsticks or a warm chaffle torn into pieces soak up the tomato broth without adding carbs.
Frequently Asked Questions
Can I freeze this soup?
Yes. Freeze the soup base without the cheese toppings for up to 3 months. The cream may separate a little when thawed; whisk it gently while reheating over low heat to bring it back together.
Is this recipe gluten-free?
All the ingredients are naturally gluten-free, but always check the labels on your sausage and broth. Some brands add fillers or wheat-based thickeners.
Can I make it in a slow cooker?
Brown the meat, onion, and garlic on the stove first, then transfer everything except the cream and cheese to the slow cooker. Cook on low for 4 to 6 hours or high for 2 to 3 hours, then stir in the cream right before serving.
My soup separated and looks grainy. What went wrong?
The cream likely hit a hard boil. If the soup already looks grainy, remove it from the heat and whisk in an extra splash of cold heavy cream. It often smooths the texture right out.
One-Pot Keto Lasagna Soup Recipe
Ingredients
Method
- Brown the sausage, beef, onion, and garlic in a large pot over medium-high heat for about 6 minutes, until no pink remains. Drain excess fat if necessary.
- Stir in the tomato paste for 1 minute, then add the crushed tomatoes, broth, Italian seasoning, red pepper flakes, salt, and pepper. Bring to a boil, reduce heat, and simmer uncovered for 15 minutes.
- Remove the pot from the heat and slowly stir in the heavy cream. Keep warm over low heat, without boiling.
- Ladle into bowls, top with ricotta, mozzarella, Parmesan, and basil. Serve immediately.
Notes
