Mouthwatering Spicy Lasagna Soup

Lasagna is one of those dinners I crave all the time, but let’s be real—I don’t always have the energy to layer noodles and cheese after a long day. That’s where this soup comes in. It gives me all those cozy lasagna flavors without the fuss of assembling a whole casserole dish.

This recipe started as a weeknight experiment when I had leftover marinara and some broken lasagna noodles in my pantry. I threw everything into a pot, and my family couldn’t get enough. Now it’s on regular rotation, especially when the weather gets cold and we want something warm and satisfying.

The best part? You can have this on the table in under an hour. One pot, barely any prep work, and you still get that rich, cheesy, Italian comfort food experience. Plus, the spicy sausage adds a nice kick that makes it feel a little more special than your average weeknight soup.

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What Kind of Sausage Should I Use?

For this spicy lasagna soup, Italian sausage is your best bet since it’s already seasoned with fennel and herbs that complement the other flavors. You can go with hot Italian sausage if you want extra heat, or stick with mild or sweet Italian sausage and let the red pepper flakes do the work. Ground sausage is easier to work with than links since you won’t need to remove the casings, but either will taste great once you break it up in the pot. If you’re watching your fat intake, turkey or chicken Italian sausage works just fine here, though pork sausage will give you the richest flavor.

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Options for Substitutions

This soup is pretty forgiving when it comes to swaps, so feel free to work with what you have:

• Sausage: Ground beef, ground turkey, or Italian chicken sausage all work great here. If using lean meat, you might want to add a bit more olive oil to keep things from sticking.
• Lasagna noodles: You can break up regular lasagna noodles, but any pasta shape works – try penne, rigatoni, or even broken spaghetti. Just adjust cooking time based on the pasta package directions.
• Chicken broth: Vegetable or beef broth both work fine. If you’re using beef broth, it’ll give the soup a deeper, richer flavor.
• Marinara sauce: Crushed tomatoes or tomato sauce can replace marinara. If using plain tomato products, you may want to add a pinch of sugar and extra Italian seasoning to balance the flavors.
• Cream: Half-and-half or whole milk can substitute for cream, though the soup will be slightly less rich. You can also use a splash of heavy cream if that’s what you have.
• Basil pesto: If you don’t have pesto, just add extra fresh basil at the end or skip it altogether – the soup will still taste great.
• Parmesan rind: This adds great flavor but isn’t essential. If you don’t have one saved, just skip it or add an extra tablespoon of grated parmesan instead.

Watch Out for These Mistakes While Cooking

Breaking your lasagna noodles too small is a rookie move that’ll leave you with mushy pasta bits instead of satisfying, spoonable pieces – aim for 2-3 inch chunks that hold their shape.

The biggest mistake is adding all the noodles at once without stirring occasionally, which causes them to stick together and cook unevenly, so give the pot a gentle stir every few minutes during that 14-15 minute simmer.

Don’t let the soup boil aggressively once you’ve added the cream and mozzarella, as high heat can cause the dairy to separate and create an unappetizing, grainy texture – keep it at a gentle simmer.

If you’re planning to have leftovers, consider cooking the lasagna noodles separately and adding them to individual bowls, since the pasta will continue absorbing liquid as it sits and can turn your soup into thick sludge by day two.

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What to Serve With Spicy Lasagna Soup?

This hearty soup is pretty filling on its own, but I love serving it with warm garlic bread or a crusty baguette for dipping into all that cheesy, tomatoey goodness. A simple Caesar salad on the side adds a nice crunch and helps balance out the richness of the soup. If you want to make it a full Italian feast, you could also serve it with some roasted vegetables like zucchini or asparagus, or even a light arugula salad with lemon vinaigrette. Since the soup already has plenty of cheese and pasta, I’d keep the sides pretty simple so nothing competes with the main event.

Storage Instructions

Store: Keep your leftover lasagna soup in an airtight container in the fridge for up to 4 days. Just know that the noodles will soak up more broth as it sits, so you might want to add a splash of chicken broth when reheating to loosen it up.

Freeze: This soup freezes pretty well for up to 3 months, but I’d recommend freezing it before adding the cream and cheese toppings. The dairy can get a little weird when frozen, so just stir those in fresh when you reheat it.

Reheat: Warm it up on the stovetop over medium heat, stirring occasionally until heated through. You can also microwave individual portions, but add a little extra broth or water since the noodles tend to absorb liquid while sitting in the fridge.

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 2800-3100
• Protein: 100-115 g
• Fat: 160-180 g
• Carbohydrates: 210-230 g

Ingredients

For the soup:

• 1.5 tbsp olive oil
• 1 lb sausage (I prefer Johnsonville Spicy Italian for more kick)
• 1 red bell pepper
• 1 sweet onion
• 2 carrots
• 6 garlic cloves
• 2.5 tsp oregano
• 1.5 tsp basil
• 1.5 tsp thyme
• 0.5 tsp red pepper flakes
• 0.75 tsp salt
• 0.75 tsp black pepper
• 28 oz marinara sauce (I always use Rao’s Homemade for the best flavor)
• 4.5 cups chicken broth
• 1 parmesan rind (adds a salty, nutty depth to the broth)
• 8 oz lasagna sheets (broken into 1-inch pieces before adding)
• 0.75 cup cream
• 0.75 cup mozzarella
• 0.5 tsp sugar

For the topping:

• 1/3 cup ricotta (I like Galbani for its extra creamy texture)
• 1/4 cup basil pesto
• parmesan
• fresh basil

Step 1: Brown the Sausage and Build the Base

• 1.5 tbsp olive oil
• 1 lb sausage

Heat the olive oil in a large pot over medium-high heat.

Add the sausage, breaking it into small pieces as it cooks, for 5-7 minutes until browned and cooked through.

Remove the sausage with a slotted spoon and set aside on a paper towel-lined plate.

This step renders out the fat and develops deep flavor that will anchor the entire soup.

Step 2: Sauté the Aromatic Vegetables

• 1 red bell pepper, diced
• 1 sweet onion, diced
• 2 carrots, diced
• 6 garlic cloves, minced

In the same pot with the rendered sausage fat, add the diced red bell pepper, sweet onion, and carrots.

Sauté for 3-4 minutes until they begin to soften and release their natural sugars.

Add the minced garlic in the final minute and stir constantly so it becomes fragrant without burning.

I like to let the garlic just kiss the hot oil—this mellows its raw bite and builds a sweeter, more rounded base for the soup.

Step 3: Bloom the Spices and Return the Sausage

• 2.5 tsp oregano
• 1.5 tsp basil
• 1.5 tsp thyme
• 0.5 tsp red pepper flakes
• 0.75 tsp salt
• 0.75 tsp black pepper
• cooked sausage from Step 1

Stir in the oregano, basil, thyme, red pepper flakes, salt, and black pepper, mixing well to coat the vegetables and allow the dried herbs to bloom in the fat for about 30 seconds.

Return the cooked sausage to the pot and stir to combine.

Blooming the spices this way releases their essential oils and ensures even distribution throughout the soup rather than ending up in clumps.

Step 4: Build the Broth Base and Simmer

• 28 oz marinara sauce
• 4.5 cups chicken broth
• 1 parmesan rind
• 8 oz lasagna sheets

Pour in the marinara sauce and chicken broth, stirring to combine.

Add the parmesan rind to the pot—it will slowly dissolve and impart a salty, umami richness that deepens the overall flavor profile.

Bring the soup to a simmer over medium heat.

Break the lasagna sheets into 1-inch pieces and add them to the simmering broth, stirring occasionally to prevent sticking.

Simmer for 14-15 minutes, until the pasta is tender but not mushy.

I always use Rao’s marinara because its clean tomato flavor lets all the spices and herbs shine through without competing.

Step 5: Finish with Cream and Cheese

• 0.75 cup cream
• 0.75 cup mozzarella
• 0.5 tsp sugar

Reduce heat to low and stir in the cream and mozzarella, allowing the cheese to fully melt and incorporate into the broth for about 1-2 minutes.

The soup should now have a rich, slightly creamy consistency.

Taste and adjust seasoning if needed, adding the sugar if you find the sauce tastes too acidic.

Step 6: Serve with Fresh Toppings

• 1/3 cup ricotta
• 1/4 cup basil pesto
• parmesan
• fresh basil

Ladle the hot soup into bowls and top each serving with a dollop of ricotta, a generous spoonful of basil pesto, freshly grated parmesan, and a few torn leaves of fresh basil.

The cool ricotta and pesto contrast beautifully with the hot, spicy soup, creating layers of flavor and texture in every spoonful.

Mouthwatering Spicy Lasagna Soup

Delicious Mouthwatering Spicy Lasagna Soup recipe with step-by-step instructions.

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Prep Time 20 minutes mins

Cook Time 35 minutes mins

Total Time 55 minutes mins

Servings 6 servings

Calories 2950 kcal

Ingredients

  

For the soup

• 1.5 tbsp olive oil
• 1 lb sausage (I prefer Johnsonville Spicy Italian for more kick)
• 1 red bell pepper
• 1 sweet onion
• 2 carrots
• 6 garlic cloves
• 2.5 tsp oregano
• 1.5 tsp basil
• 1.5 tsp thyme
• 0.5 tsp red pepper flakes
• 0.75 tsp salt
• 0.75 tsp black pepper
• 28 oz marinara sauce (I always use Rao’s Homemade for the best flavor)
• 4.5 cups chicken broth
• 1 parmesan rind (adds a salty, nutty depth to the broth)
• 8 oz lasagna sheets (broken into 1-inch pieces before adding)
• 0.75 cup cream
• 0.75 cup mozzarella
• 0.5 tsp sugar

For the topping

• 1/3 cup ricotta (I like Galbani for its extra creamy texture)
• 1/4 cup basil pesto
• parmesan
• fresh basil

Instructions

 

• Heat the olive oil in a large pot over medium-high heat. Add the sausage, breaking it into small pieces as it cooks, for 5-7 minutes until browned and cooked through. Remove the sausage with a slotted spoon and set aside on a paper towel-lined plate. This step renders out the fat and develops deep flavor that will anchor the entire soup.
• In the same pot with the rendered sausage fat, add the diced red bell pepper, sweet onion, and carrots. Sauté for 3-4 minutes until they begin to soften and release their natural sugars. Add the minced garlic in the final minute and stir constantly so it becomes fragrant without burning. I like to let the garlic just kiss the hot oil—this mellows its raw bite and builds a sweeter, more rounded base for the soup.
• Stir in the oregano, basil, thyme, red pepper flakes, salt, and black pepper, mixing well to coat the vegetables and allow the dried herbs to bloom in the fat for about 30 seconds. Return the cooked sausage to the pot and stir to combine. Blooming the spices this way releases their essential oils and ensures even distribution throughout the soup rather than ending up in clumps.
• Pour in the marinara sauce and chicken broth, stirring to combine. Add the parmesan rind to the pot—it will slowly dissolve and impart a salty, umami richness that deepens the overall flavor profile. Bring the soup to a simmer over medium heat. Break the lasagna sheets into 1-inch pieces and add them to the simmering broth, stirring occasionally to prevent sticking. Simmer for 14-15 minutes, until the pasta is tender but not mushy. I always use Rao's marinara because its clean tomato flavor lets all the spices and herbs shine through without competing.
• Reduce heat to low and stir in the cream and mozzarella, allowing the cheese to fully melt and incorporate into the broth for about 1-2 minutes. The soup should now have a rich, slightly creamy consistency. Taste and adjust seasoning if needed, adding the sugar if you find the sauce tastes too acidic.
• Ladle the hot soup into bowls and top each serving with a dollop of ricotta, a generous spoonful of basil pesto, freshly grated parmesan, and a few torn leaves of fresh basil. The cool ricotta and pesto contrast beautifully with the hot, spicy soup, creating layers of flavor and texture in every spoonful.