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One-Pot Comfort Food

One-Pot Vegetarian Mushroom and Lentil Lasagna

By PanPotPlates Test KitchenReviewed by PanPotPlates Editorial TeamPublished Apr 20, 2026 · Updated May 12, 2026
Italian-Inspired 55 mins onepotvegetariancomfortfoodeasyfamily-friendlyheartybudget-friendlyleftoversmealprep

Enjoy a hearty, easy-to-make One-Pot Vegetarian Mushroom and Lentil Lasagna—a comforting Italian-inspired meal combining savory mushrooms, protein-packed lentils, and tender pasta layered in a rich tomato sauce. Perfect for family dinners, meal prep, and budget-friendly cooking without sacrificing flavor or simplicity.

One-Pot Vegetarian Mushroom and Lentil Lasagna
Prep 15 min
Cook 40 min
Total 55 min
Servings 6
Difficulty easy
Cuisine Italian-Inspired

Recipe Details

Prep15 min
Cook40 min
Total55 min
Servings6
Difficultyeasy
CuisineItalian-Inspired
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Ingredients

Servings 6
  • 2 tablespoons olive oil
  • 1 medium onion, finely chopped
  • 3 cloves garlic, minced
  • 12 oz (340 g) cremini or button mushrooms, sliced
  • 1 cup dried brown or green lentils, rinsed
  • 1 teaspoon dried oregano
  • 1 teaspoon dried basil
  • 1/2 teaspoon red pepper flakes (optional)
  • 1 (28 oz) can crushed tomatoes
  • 2 1/2 cups vegetable broth
  • 8 lasagna noodles, broken into pieces
  • 1/2 cup grated Parmesan cheese (plus more for topping, optional)
  • 1 cup shredded mozzarella cheese
  • Salt and freshly ground black pepper, to taste
  • Fresh basil leaves, for garnish (optional)

Instructions

  1. Heat the olive oil in a large deep skillet or Dutch oven over medium heat.
  2. Add the finely chopped onion and sauté for 3-4 minutes until translucent and fragrant.
  3. Stir in the minced garlic and cook for 1 additional minute.
  4. Add the sliced mushrooms and cook for 6-8 minutes, stirring occasionally, until they release moisture and start to brown.
  5. Mix in the rinsed lentils, dried oregano, dried basil, and red pepper flakes if using; stir well to combine.
  6. Pour in the crushed tomatoes and vegetable broth, stirring thoroughly.
  7. Season with salt and freshly ground black pepper to taste.
  8. Bring the mixture to a gentle boil, then reduce heat to a simmer.
  9. Add the broken lasagna noodles evenly across the pot, pressing them gently into the sauce to submerge.
  10. Cover and simmer for 25-30 minutes, stirring every 8-10 minutes to prevent sticking and ensure even noodle cooking.
  11. Once noodles are tender and lentils are cooked, remove the lid and sprinkle Parmesan and mozzarella cheeses evenly over the top.
  12. Cover again and cook for 5 more minutes until the cheese melts.
  13. Turn off heat and let the lasagna rest, covered, for 5 minutes.
  14. Garnish with fresh basil leaves if desired and serve warm.

Frequently Asked Questions

Reader questions and answers for this recipe will appear here.

Customize this One-Pot Vegetarian Mushroom and Lentil Lasagna to suit your dietary preferences without compromising on flavor or ease:

  • Mushrooms: Swap cremini or button mushrooms for portobello, shiitake, or zucchini slices to vary texture and flavor.
  • Lentils: Use red lentils for quicker cooking and softer texture, or substitute cooked lentils or canned beans like cannellini or kidney beans for convenience.
  • Lasagna noodles: Replace with gluten-free lasagna noodles or use thinly sliced zucchini or eggplant strips for a low-carb, vegetable-forward alternative.
  • Cheese: For dairy-free options, omit Parmesan and mozzarella or try plant-based cheese substitutes that melt well.
  • Vegetable broth: Substitute with other low-sodium broths or seasoned water to control flavor and saltiness.
  • Herbs & Spices: Fresh herbs can replace dried oregano and basil to brighten the dish; adjust or omit red pepper flakes for desired heat level or kid-friendly meals.

These substitutions maintain the recipe’s easy, budget-friendly, and family-friendly characteristics, accommodating vegetarian, dairy-free, and gluten-free diets.

Pan Or Pot Required

This One-Pot Vegetarian Mushroom and Lentil Lasagna requires only a single large, deep skillet or heavy-bottomed Dutch oven to create a family-friendly, hearty meal with minimal cleanup. These pots enable even heat distribution and retain moisture, which is essential for simmering lentils and cooking broken lasagna noodles directly in the savory tomato sauce.

Select cookware with deep sides and a tight-fitting lid to ensure the noodles soften evenly, and the sauce melds flavors perfectly without drying out. A nonstick or enameled cast iron surface simplifies cleanup, complementing the recipe’s easy and budget-conscious design.

Using one pot makes this Italian-inspired vegetarian lasagna ideal for busy weeknight dinners, meal prepping, and enjoying delicious leftovers.

Cookware Size Guidance

For optimal results, choose a deep skillet or Dutch oven with at least a 5 to 6-quart (4.7 to 5.7 liters) capacity when making this One-Pot Vegetarian Mushroom and Lentil Lasagna. This size ensures ample space for the lentils, broken lasagna noodles, mushrooms, and liquids to cook evenly without overcrowding or spillage.

A pot that is too small can cause uneven cooking or prevent noodles from fully submerging in the sauce, which affects texture and flavor development. The deep sides help retain moisture and reduce splattering during simmering and resting phases.

Whether cooking full servings or leftovers, this cookware size supports the recipe’s family-friendly, hearty, and easy-to-make qualities.

Cookware Swap Guidance

If you don’t have a large skillet or Dutch oven, consider these suitable cookware alternatives to retain the simplicity and hearty nature of this recipe:

  • Heavy-Bottomed Saucepan (4-5 quarts): Provides even heat and a snug lid for sautéing and simmering ingredients together in one pot.
  • Deep Cast Iron Skillet with Lid: Offers excellent heat retention and moisture control, perfect for slow simmering and melting cheese.
  • Enamel-Coated Cast Iron Pot: Ideal for acidic tomato-based sauces, this pot ensures steady simmering without metallic taste.
  • Slow Cooker (with pre-sauté step): Sauté onions, garlic, and mushrooms first, then transfer all ingredients to the slow cooker. Cook on low until lentils and noodles are tender, but adjust timing accordingly.

Note: Avoid thin or shallow pans without lids, as they won’t retain moisture or heat sufficiently to cook the noodles and lentils evenly in one pot.

Leftovers Quality

This One-Pot Vegetarian Mushroom and Lentil Lasagna stores exceptionally well, making it perfect for meal prepping and enjoying leftovers. Once cooled, transfer leftovers to airtight containers and refrigerate for up to 3-4 days while retaining flavor and texture.

For longer storage, freeze portions in freezer-safe containers for 2-3 months. Thaw overnight in the refrigerator before reheating.

Reheat gently on the stovetop over low to medium heat, stirring occasionally and adding a splash of vegetable broth or water to restore creaminess. Alternatively, microwave in short intervals with stirring to ensure even heating. Garnish with fresh basil or extra Parmesan to refresh the flavors.

This storage advice helps maintain the comforting and hearty qualities that make this recipe a family-friendly favorite.

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