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Bowl of delicious vegetarian lasagna soup with fresh vegetables and herbs

Vegetarian Lasagna Soup

A cozy, comforting soup that captures the flavors of lasagna in a quick and easy one-pot dish.
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Course Main Course, Soup
Cuisine Italian
Servings 6 servings
Calories 400 kcal

Ingredients
  

For the soup base

  • 1 tablespoon olive oil For sautéing
  • 1 medium yellow onion, diced Adds sweetness and flavor
  • 6 cloves garlic, thinly sliced Adds aroma and depth
  • 1.5 tablespoons Italian seasoning Herb blend for flavor
  • 2 tablespoons tomato paste For depth of flavor
  • 0.5 cup basil pesto Brightens the soup
  • 0.5 cup uncooked split red lentils Thickens the broth
  • 2 cans (28 oz.) fire roasted crushed tomatoes Provides the tomato base
  • 4 cups vegetable broth For the soup base
  • 1-2 teaspoons granulated sugar, optional To balance acidity

For the pasta and toppings

  • 8 pieces uncooked lasagna noodles, broken into bite-sized pieces Classic pasta element
  • 2-3 cups chopped fresh baby spinach, optional Add freshness and nutrients
  • 0.5 cup Parmesan cheese For grating on top
  • 0.5 cup shredded mozzarella cheese For melting into the soup
  • 1 cup whole milk ricotta cheese Adds creaminess
  • to taste Kosher salt For seasoning
  • to taste Fresh cracked pepper For seasoning
  • Fresh chopped parsley for garnish To add color and flavor

Instructions
 

Preparation

  • Heat the olive oil in a large pot over medium-high heat.
  • Add the diced onion with a pinch of salt and freshly cracked pepper. Sauté, stirring frequently, about 3 minutes until the onion is soft and translucent.
  • Add the thinly sliced garlic and Italian seasoning along with a couple pinches of salt and pepper. Sauté for another minute until fragrant.

Cooking the base

  • Stir in the tomato paste and cook for about 2 minutes, until the paste deepens to a brick-red color.
  • Deglaze the pot with a splash of vegetable broth, scraping up any browned bits from the bottom. Then add the pesto, split red lentils, crushed tomatoes, and the rest of the vegetable broth.
  • Add sugar if using, and season with a few large pinches of salt and pepper.

Simmering

  • Turn the heat up to medium-high and bring the mixture to a gentle simmer.
  • Stir occasionally as it comes to a simmer so the lentils don’t stick to the bottom.
  • Stir in the broken lasagna noodles. Reduce heat to low or medium-low and simmer gently for 12–15 minutes until the pasta is al dente and the lentils are tender.

Final Steps

  • Remove the pot from heat and stir in the chopped baby spinach until it wilts.
  • Taste and adjust salt and pepper.
  • Ladle the soup into bowls and top with grated Parmesan, shredded mozzarella, and a generous dollop of ricotta.
  • Garnish with fresh parsley and serve.

Notes

Store leftovers in an airtight container for up to 4 days. For freezing, portion into containers without spinach or mozzarella toppings.
Keyword comfort food, easy dinner, one-pot meal, Pasta Soup, Vegetarian Lasagna Soup