One-Pan Smoky Veggie Lentil Lasagne

Featured in: One-Pot Wonders

This satisfying one-pan creation brings together smoky red lentils, tender vegetables, and velvety béchamel in perfectly layered comfort. The smoky paprika infuses every bite with depth, while mushrooms and courgettes add hearty texture. Simply assemble, bake, and let it rest for the most effortless serving experience.

Updated on Wed, 21 Jan 2026 15:10:00 GMT
Golden-brown One-Pan Smoky Veggie Lentil Lasagne with melted mozzarella and fresh basil garnish on a rustic wooden table.  Pin
Golden-brown One-Pan Smoky Veggie Lentil Lasagne with melted mozzarella and fresh basil garnish on a rustic wooden table. | quickcrav.com

I stumbled upon this recipe during a particularly chaotic week when I needed comfort food but refused to deal with multiple pots and pans. The smoky aroma filling my tiny apartment as it baked made everything feel better immediately. My roommate kept poking her head into the kitchen asking if it was ready yet. Now it is the go-to dinner whenever life feels overwhelming and we need something substantial but simple.

Last winter I made this for my parents who are skeptical of vegetarian lasagne. They both went back for seconds and my dad actually asked if I could make it again next Sunday. The way the lentils and vegetables melt together into something so satisfying feels like magic every single time.

Ingredients

  • Olive oil: Use a decent one here since it is the foundation for sautéing all those vegetables
  • Onion and garlic: These aromatics build the flavor base so do not rush this step
  • Carrot red pepper mushrooms courgettes: The vegetable mixture creates such depth and varies the texture beautifully
  • Smoked paprika: This is the secret ingredient that gives the entire dish its distinctive smoky soul
  • Dried herbs: Oregano thyme and chili flakes work together to mimic Italian warmth
  • Tomato paste: Concentrates the tomato flavor and adds richness to the sauce
  • Canned chopped tomatoes: Make sure to use good quality ones as they form the sauce body
  • Soy sauce: Adds umami depth that makes the vegetables taste more substantial
  • Red lentils: They break down beautifully and thicken the sauce while adding protein
  • Vegetable stock: Use a flavorful one since it cooks down into the lentils
  • Butter: Essential for a proper béchamel that tastes indulgent
  • Plain flour: This thickens the white sauce so it clings to the layers
  • Whole milk: Creates that luxurious creamy texture we all want in lasagne
  • Nutmeg: Just a tiny pinch transforms the béchamel into something special
  • Mature cheddar: Adds sharpness that cuts through the richness
  • No-boil lasagne sheets: Absorb the sauces while baking and hold everything together
  • Mozzarella: That golden bubbling top makes the final presentation irresistible

Instructions

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Get the oven ready:
Preheat to 200°C (180°C fan) or 400°F so it is hot when you need it
Sauté the aromatics:
Heat olive oil in a large ovenproof pan and cook onion and garlic for 2 minutes until fragrant
Soften the vegetables:
Add carrot red pepper mushrooms and courgettes cooking 5 to 6 minutes until they start yielding
Add the spices:
Stir in smoked paprika oregano thyme chili flakes and tomato paste cooking for 1 minute to bloom the flavors
Build the sauce:
Add canned tomatoes soy sauce red lentils and vegetable stock then simmer covered 15 to 20 minutes until lentils are tender
Make the béchamel:
Melt butter then stir in flour for 1 minute before gradually whisking in milk and thickening for about 5 minutes
Finish the sauce:
Remove from heat and stir in nutmeg cheese salt and white pepper until smooth and creamy
Start layering:
Remove half the veggie mixture then layer one third of béchamel over the remaining sauce followed by lasagne sheets
Build the middle:
Spread half the reserved bolognese over pasta then add another third béchamel and another layer of sheets
Complete the layers:
Finish with remaining bolognese final lasagne sheets and remaining béchamel then top with mozzarella
Bake covered:
Cover loosely with foil and bake for 25 minutes to cook the pasta through
Brown the top:
Remove foil and bake another 10 to 15 minutes until golden and bubbling
Rest and serve:
Let stand for 10 minutes before slicing so the layers set and garnish with fresh basil
Product image
Air fry, roast, reheat, and dehydrate meals quickly for crispy snacks and easy weeknight dinners.
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A single serving of hearty One-Pan Smoky Veggie Lentil Lasagne on a white plate, showcasing the rich, smoky layers of lentils, mushrooms, and courgettes.  Pin
A single serving of hearty One-Pan Smoky Veggie Lentil Lasagne on a white plate, showcasing the rich, smoky layers of lentils, mushrooms, and courgettes. | quickcrav.com

My friend accidentally used green lentils once and the texture was completely wrong. She learned the hard way that red lentils really do dissolve into the sauce in a way that makes this lasagne so special. We still laugh about that dinner now.

Make It Your Own

Sometimes I add spinach to the vegetable mixture when I need to sneak in more greens. The way it wilts down into the sauce means nobody complains about eating their vegetables. You could also swap the courgettes for eggplant in summer when they are at their best.

Timing Is Everything

I have learned that getting all the components ready before starting to layer saves so much stress. There is nothing worse than realizing your béchamel has clumped while you are trying to assemble everything. Work methodically and give yourself permission to move slowly.

Serving Suggestions

A crisp green salad with an acidic vinaigrette cuts through the richness perfectly. Some crusty bread to mop up any escaped sauce is never a bad idea either.

  • The flavors deepen even more if you make it a day ahead
  • Leftovers reheat beautifully in the microwave or oven
  • This freezes well for those nights when cooking feels impossible
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One-Pan Smoky Veggie Lentil Lasagne bubbling in a cast-iron skillet, with steam rising from the golden, cheesy top layer. Pin
One-Pan Smoky Veggie Lentil Lasagne bubbling in a cast-iron skillet, with steam rising from the golden, cheesy top layer. | quickcrav.com

There is something so satisfying about pulling this bubbling pan out of the oven and watching everyone gather around. Comfort food at its finest.

Recipe Q&A

Can I prepare this ahead of time?

Yes, assemble the entire dish up to 24 hours in advance, cover tightly, and refrigerate. Add 5-10 minutes to the baking time if cooking from cold.

What gives the sauce its smoky flavor?

Smoked paprika is the key ingredient that provides the distinctive smoky taste throughout the vegetable layer.

Can I use green or brown lentils instead?

Red lentils work best as they cook down quickly and create a thick, sauce-like consistency. Green or brown lentils hold their shape and won't blend as smoothly.

Do I need to cook the lasagne sheets first?

No, using no-boil lasagne sheets means they cook perfectly in the sauce during baking. Regular sheets can be used but may need pre-boiling.

How do I store leftovers?

Cool completely, then refrigerate in an airtight container for up to 3 days. Reheat individual portions in the microwave or cover and warm in a 180°C oven.

Can I freeze this dish?

Yes, either freeze before baking (wrap tightly) for up to 3 months, or freeze leftovers in portion-sized containers. Thaw overnight before reheating.

One-Pan Smoky Veggie Lentil Lasagne

Hearty one-pan layers of smoky lentils, vegetables, and creamy béchamel.

Preparation time
25 min
Cooking time
40 min
Total time
65 min

Category One-Pot Wonders

Difficulty Medium

Origin Italian-Inspired

Yield 6 Servings

Dietary specifications Vegetarian

Ingredients

Vegetable Bolognese

01 2 tbsp olive oil
02 1 large onion, finely chopped
03 2 garlic cloves, minced
04 1 medium carrot, diced
05 1 red bell pepper, diced
06 8 oz mushrooms, chopped
07 2 medium zucchini, diced
08 1 tsp smoked paprika
09 1 tsp dried oregano
10 1/2 tsp dried thyme
11 1/2 tsp chili flakes
12 1 tbsp tomato paste
13 14 oz can chopped tomatoes
14 1 tbsp soy sauce
15 2/3 cup dried red lentils, rinsed
16 2 cups vegetable stock
17 Salt and black pepper, to taste

Béchamel Sauce

01 3 tbsp unsalted butter
02 1/3 cup all-purpose flour
03 2 1/2 cups whole milk
04 1/4 tsp ground nutmeg
05 2/3 cup grated sharp cheddar cheese
06 Salt and white pepper, to taste

Assembly

01 9-12 no-boil lasagne noodles
02 2 oz shredded mozzarella cheese
03 Fresh basil leaves, for serving

Instructions

Step 01

Preheat Oven: Preheat the oven to 400°F.

Step 02

Sauté Aromatics: Heat olive oil in a large ovenproof deep skillet over medium heat. Add onion and garlic, sauté for 2 minutes until fragrant.

Step 03

Cook Vegetables: Add carrot, red pepper, mushrooms, and zucchini. Cook for 5-6 minutes until softened and beginning to brown.

Step 04

Add Spices and Tomato Paste: Stir in smoked paprika, oregano, thyme, chili flakes, and tomato paste. Cook for 1 minute to bloom the spices.

Step 05

Simmer Lentil Sauce: Add canned tomatoes, soy sauce, red lentils, and vegetable stock. Bring to a simmer, cover, and cook for 15-20 minutes, stirring occasionally, until lentils are tender and sauce has thickened. Season with salt and pepper.

Step 06

Prepare Béchamel: Melt butter in a medium saucepan over medium heat. Stir in flour and cook for 1 minute. Gradually whisk in milk, then cook, stirring constantly, until thickened about 5 minutes. Remove from heat, stir in nutmeg, cheese, and season with salt and white pepper.

Step 07

First Layer: Remove half the vegetable lentil mixture from the pan and set aside. Layer one-third of the béchamel over the remaining sauce in the pan, then top with a layer of lasagne noodles, breaking to fit as needed.

Step 08

Second Layer: Spread half the reserved lentil mixture over the pasta, pour over another third of béchamel, and add another layer of lasagne noodles.

Step 09

Final Assembly: Finish with remaining lentil mixture, top with final layer of lasagne noodles, and pour over remaining béchamel. Sprinkle with shredded mozzarella.

Step 10

Bake Covered: Cover the pan loosely with foil and bake for 25 minutes.

Step 11

Brown and Finish: Remove foil and bake for another 10-15 minutes until golden and bubbling. Let stand for 10 minutes before serving. Garnish with fresh basil if desired.

Required equipment

  • Large ovenproof frying pan or deep skillet
  • Medium saucepan
  • Whisk
  • Chopping board and knife
  • Aluminum foil

Allergen information

Review each ingredient to identify potential allergens and seek advice from a healthcare professional if uncertain.
  • Contains gluten (flour, lasagne sheets)
  • Contains milk and cheese (dairy)
  • Contains soy (soy sauce)
  • For allergen-free versions, use gluten-free lasagne sheets and flour, dairy-free alternatives, and tamari instead of soy sauce

Nutritional values (per serving)

These details are offered as a general guide only and shouldn't replace professional medical guidance.
  • Calories: 410
  • Fat: 14 g
  • Carbs: 51 g
  • Protein: 19 g