One-Pan Smoky Veggie Lentil Lasagne

Featured in: Sheet-Pan & One-Pot Meals

This hearty one-pan lasagne combines smoky vegetable bolognese made with red lentils, mushrooms, courgettes, and bell peppers. The lentils provide protein and fiber while creating a rich, thick sauce perfect for layering. With smoked paprika, dried herbs, and a touch of balsamic vinegar, every bite delivers deep, satisfying flavors. Assembly happens directly in your ovenproof skillet, meaning less washing up and more time enjoying this comforting Italian-inspired dish with family and friends.

Updated on Wed, 28 Jan 2026 14:08:00 GMT
Golden, bubbling One-Pan Smoky Veggie Lentil Lasagne fresh from the oven, topped with fresh basil leaves and ready to slice. Pin It
Golden, bubbling One-Pan Smoky Veggie Lentil Lasagne fresh from the oven, topped with fresh basil leaves and ready to slice. | orbitcuisine.com

The aroma of smoked paprika wafting through my kitchen on a rainy Sunday afternoon led to the creation of this one-pan wonder. I was determined to make lasagne without the mountain of dishes that usually follows, so I experimented with keeping everything in a single skillet. The vegetables caramelized beautifully against the cast iron, creating deeper flavors than any traditional version I'd made before. Something magical happens when those red lentils break down into the sauce, giving it a hearty texture that satisfies even without meat.

I first made this for my friend Sarah who claimed she could never be satisfied by vegetarian lasagne. The kitchen fell silent as she took her first bite, then widened her eyes in surprise. She confessed between mouthfuls that the smoky depth and texture of the lentils had completely fooled her senses. Now whenever we have dinner together, she specifically requests my one-pan creation, which feels like the highest compliment a recipe can receive.

Ingredients

  • Red lentils: Unlike green or brown varieties, red lentils break down during cooking, creating that perfect sauce consistency without the need for flour or other thickeners.
  • Smoked paprika: This single ingredient provides the signature flavor that makes people pause mid-bite and wonder what that delicious subtle smokiness is.
  • Mushrooms: Finely chopping these adds a meaty texture and earthy undertones that make this veggie dish feel substantial and satisfying.
  • No-boil lasagne sheets: These are non-negotiable for the one-pan method, as they cook perfectly in the sauce moisture without pre-boiling.
  • Balsamic vinegar: Just a tablespoon added at the end cuts through the richness with a subtle tang that brightens all the flavors.

Instructions

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Build your flavor base:
Heat that olive oil until it shimmers, then add your onion and watch it transform from sharp to sweet as it softens. When it becomes translucent and fragrant, youll know its ready for the garlic and vegetables.
Create the veggie symphony:
Add carrots, celery and bell pepper, letting them soften just enough to release their flavors while maintaining some texture. The kitchen should be filled with earthy aromas by this point.
Introduce the main players:
When you add the mushrooms and courgette, let them release their moisture completely. This concentration of flavor is what gives the sauce its depth.
Spice transformation:
That moment when the smoked paprika hits the hot pan is pure kitchen magic. Youll smell the difference immediately as it blooms in the oil.
Let it simmer:
Once everything comes together with the lentils and stock, give it time. Those little red lentils need about 20 minutes to break down and thicken into a proper sauce.
Begin the layering dance:
Keep half the sauce in the pan as your base layer, and reserve half for the middle layers. Arranging the lasagne sheets might require breaking some to fit your pan shape, and thats perfectly fine.
Create cheese pockets:
Rather than spreading the ricotta evenly, dollop it in small mounds so youll discover creamy pockets throughout each slice. Those surprise bites make the experience so much more delightful.
The golden finale:
That moment when you remove the foil for the final bake is crucial for developing that irresistible golden, slightly crispy cheese top. Watch it carefully as ovens vary.
The patience test:
Those 10 minutes of resting time feel like forever when the bubbling pan is right there, but this allows the layers to set so your perfect slices dont collapse. Trust me, its worth the wait.
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Bake lasagna, casseroles, and roasted dishes evenly, then serve straight from oven to table.
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A close-up of a serving of One-Pan Smoky Veggie Lentil Lasagne on a white plate, showcasing the hearty lentil and vegetable layers. Pin It
A close-up of a serving of One-Pan Smoky Veggie Lentil Lasagne on a white plate, showcasing the hearty lentil and vegetable layers. | orbitcuisine.com

Last winter, during a particularly heavy snowstorm that left us homebound for days, this dish became more than just dinner. Working together in the kitchen with my partner, chopping vegetables and layering the lasagne while snow piled outside our windows, transformed a simple meal into a memory. We lit candles, opened wine, and savored each bite while the wind howled outside, grateful for the warmth of both the food and the moment.

Making It Your Own

While testing this recipe countless times, Ive learned that its remarkably adaptable to whatever vegetables might be languishing in your fridge drawer. Sweet potatoes add wonderful color and natural sweetness, while spinach or kale can be stirred into the sauce just before layering for added nutrition. The recipe remains steadfast as long as you maintain roughly the same volume of vegetables and that crucial smoked paprika.

Serving Suggestions

Theres something about the casual elegance of bringing the entire pan to the table that creates an immediate sense of conviviality. I often place it on a wooden board in the center with a simple arugula salad dressed with lemon juice and olive oil on the side. The peppery greens provide a perfect counterpoint to the rich lasagne, cutting through its depth with bright freshness.

Storage and Reheating

The next-day transformation of this lasagne is something Im consistently amazed by. After a night in the refrigerator, the flavors meld and deepen in a way that makes leftovers sometimes even better than the original serving. Individual portions reheat beautifully in the oven, developing crispy edges around the pasta that add textural contrast.

  • For best results, reheat covered with foil at 170°C for about 20 minutes, removing the foil for the last 5 minutes.
  • The lasagne freezes surprisingly well for up to three months, though the texture of the courgettes will soften slightly upon thawing and reheating.
  • If freezing, cut into individual portions first for easier and quicker reheating without defrosting.
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Skillet with a rustic One-Pan Smoky Veggie Lentil Lasagne, garnished with fresh basil, served alongside a crisp green salad and crusty bread. Pin It
Skillet with a rustic One-Pan Smoky Veggie Lentil Lasagne, garnished with fresh basil, served alongside a crisp green salad and crusty bread. | orbitcuisine.com

This one-pan creation has become my signature dish for both casual family dinners and special gatherings with friends. Its the perfect reminder that simplifying the process doesnt mean sacrificing flavor or that wonderful feeling of sharing something made with care.

Recipe Q&A

Can I make this gluten-free?

Yes, simply substitute the regular lasagne sheets with gluten-free oven-ready sheets. The texture and cooking time remain the same, making it an easy adaptation for those avoiding gluten.

How long does this keep in the refrigerator?

Stored in an airtight container, this lasagne keeps well for 3-4 days in the refrigerator. The flavors often develop and improve overnight, making it excellent for meal prep or leftovers the next day.

Can I use green or brown lentils instead of red?

Red lentils work best as they cook quickly and break down naturally, creating a thick sauce. Green or brown lentils hold their shape and require longer cooking time, which would alter the texture of your final dish.

Is it possible to freeze this lasagne?

Absolutely. Assemble the complete dish, wrap tightly in foil plus plastic wrap, and freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed, adding 10-15 minutes if still partially frozen.

What can I substitute for ricotta?

Cottage cheese blended until smooth creates a similar creamy texture. For vegan options, use plant-based ricotta or create a cashew-based alternative blended with lemon juice and nutritional yeast.

Do I need to cook the lasagne sheets first?

No, using oven-ready lasagne sheets means no pre-cooking required. They absorb moisture from the vegetable bolognese during baking, becoming perfectly tender while holding their shape.

One-Pan Smoky Veggie Lentil Lasagne

A vibrant Italian-inspired dish featuring smoky vegetable bolognese, red lentils, and melted cheese layered in one pan.

Prep Time
25 mins
Cook Time
50 mins
Time Needed
75 mins
Created by Benjamin Ward


Skill Level Medium

Cuisine Italian-Inspired

Portions 6 Makes

Diet Info Meat-Free

What You Need

Vegetable Bolognese

01 2 tablespoons olive oil
02 1 large onion, finely chopped
03 3 garlic cloves, minced
04 2 medium carrots, diced
05 2 celery stalks, diced
06 1 red bell pepper, diced
07 8.8 ounces mushrooms, finely chopped
08 1 large zucchini, diced
09 1 teaspoon smoked paprika
10 1 teaspoon dried oregano
11 0.5 teaspoon dried thyme
12 0.5 teaspoon chili flakes, optional
13 1 can (14 ounces) chopped tomatoes
14 2 tablespoons tomato paste
15 5.3 ounces dried red lentils, rinsed
16 2.5 cups vegetable stock
17 Salt and black pepper to taste
18 1 tablespoon balsamic vinegar

Lasagne and Cheese

01 9 to 12 no-boil lasagne sheets
02 7 ounces ricotta cheese
03 5.3 ounces grated mozzarella
04 1.8 ounces grated Parmesan or vegetarian hard cheese

Topping

01 2 tablespoons fresh basil leaves, torn

Steps

Step 01

Prepare the base aromatics: Heat olive oil in a large, deep ovenproof skillet over medium heat. Add onion and cook for 3 to 4 minutes until softened.

Step 02

Build the vegetable foundation: Stir in garlic, carrots, celery, and red bell pepper. Cook for 5 minutes until just tender.

Step 03

Incorporate mushrooms and zucchini: Add mushrooms and zucchini. Sauté for 5 to 6 minutes until softened and any moisture has evaporated.

Step 04

Bloom the spices: Sprinkle in smoked paprika, oregano, thyme, and chili flakes if using. Cook for 1 minute until fragrant.

Step 05

Combine the bolognese components: Stir in chopped tomatoes, tomato paste, red lentils, and vegetable stock. Season with salt and pepper.

Step 06

Simmer the bolognese: Bring to a simmer, cover, and cook gently for 20 to 25 minutes until lentils are tender and the mixture is thick but saucy. Stir in balsamic vinegar.

Step 07

Preheat the oven: Preheat oven to 350 degrees Fahrenheit.

Step 08

Begin the first lasagne layer: Remove half the vegetable bolognese from the pan and set aside. Arrange a layer of lasagne sheets over the remaining sauce.

Step 09

Layer the cheese and sauce: Dollop half the ricotta over the lasagne sheets, then sprinkle with a third of the mozzarella and Parmesan.

Step 10

Continue the assembly: Spread half the reserved vegetable bolognese over the cheese layer, top with more lasagne sheets, and repeat the layering: ricotta, mozzarella, Parmesan, and the final layer of vegetable bolognese.

Step 11

Complete the final layer: Finish with a final layer of lasagne sheets and sprinkle the remaining mozzarella and Parmesan on top.

Step 12

Bake covered: Cover pan with foil and bake for 25 minutes.

Step 13

Finish baking: Remove foil and bake for another 10 to 15 minutes until golden and bubbling.

Step 14

Rest and serve: Rest for 10 minutes before serving. Garnish with fresh basil leaves.

Tools You'll Need

  • Large ovenproof skillet or sauté pan
  • Chopping board and knife
  • Grater
  • Measuring cups and spoons
  • Foil

Allergen Details

Review the ingredients list for potential allergens and reach out to a healthcare professional with any concerns.
  • Contains dairy: ricotta, mozzarella, Parmesan
  • Contains gluten: lasagne sheets
  • Use gluten-free lasagne sheets for gluten-free preparation
  • Use vegan cheese alternatives for dairy-free preparation

Nutrition Breakdown (per serving)

Details are for guidance only and shouldn’t replace advice from your doctor.
  • Calories: 395
  • Fats: 13 g
  • Carbohydrates: 50 g
  • Proteins: 18 g