One-Pan Smoky Veggie Lentil Lasagne

Featured in: Oven-Made Comforts

This hearty vegetarian lasagne features a rich, smoky vegetable bolognese made with red lentils, mushrooms, courgettes, and aromatic herbs. The entire dish comes together in one ovenproof pan, creating layers of tender pasta, creamy ricotta, and bubbly melted cheese.

Red lentils provide protein and texture while absorbing the smoky paprika and balsamic notes. The no-boil lasagne sheets cook perfectly in the saucy vegetable mixture, resulting in tender pasta without the extra pot.

Perfect for meal prep, this lasagne serves six and tastes even better the next day. The combination of smoked paprika, fresh basil, and three cheeses creates depth of flavor that satisfies vegetarians and meat-eaters alike.

Updated on Wed, 28 Jan 2026 16:54:00 GMT
One-Pan Smoky Veggie Lentil Lasagne in a cast-iron skillet, bubbling with golden, melted mozzarella and Parmesan. Pin It
One-Pan Smoky Veggie Lentil Lasagne in a cast-iron skillet, bubbling with golden, melted mozzarella and Parmesan. | happysfenj.com

The first time I made this veggie lentil lasagne was during a rainy Sunday when my kitchen became a haven from the storm outside. I remember the smoked paprika hitting the hot pan, releasing that gorgeous aroma that filled every corner of my home. My traditional Italian grandmother might raise an eyebrow at this one-pan approach, but even she couldn't deny how the lentils create this incredible hearty texture that rivals any meat sauce. The satisfaction of building those colorful layers in the same pan where everything cooked felt like culinary poetry.

Last autumn, I hosted a dinner for friends whod just moved to the neighborhood, feeling slightly nervous about cooking for people I barely knew. This lasagne was my secret weapon, and I still smile remembering how conversation flowed as freely as the wine while we gathered around my table. The rich aroma of the simmering sauce had already worked its magic before anyone took their first bite. By dessert, we were laughing like old friends, and this humble veggie lasagne became our friendship catalyst.

Ingredients

  • Red lentils: These tiny powerhouses are the backbone of this recipe, creating that satisfying meaty texture while soaking up all those beautiful flavors during cooking.
  • Smoked paprika: This is your secret flavor bomb, bringing that subtle smoky depth that elevates this dish from good to unforgettable.
  • Mushrooms: Chop these quite finely as theyll contribute amazing umami richness and a wonderful texture that complements the lentils perfectly.
  • No-boil lasagne sheets: These are non-negotiable for a true one-pan approach, saving you both time and an extra pot to wash.
  • Balsamic vinegar: Just that small tablespoon adds this beautiful subtle sweetness and complexity that balances the acidity of the tomatoes.

Instructions

Product image
Dries dishes, utensils, and cookware neatly after cooking, keeping your countertop organized and clutter free.
Check price on Amazon
Build your flavor foundation:
Heat that olive oil until it shimmers, then add your onion and let it soften and become translucent. The kitchen will start filling with that sweet onion aroma that signals good things are coming.
Layer in the vegetables:
When you add the garlic, carrots, celery and bell pepper, listen for that satisfying sizzle as they hit the hot pan. Keep stirring occasionally to ensure even cooking as they soften and release their flavors.
Introduce the mushrooms and courgette:
These vegetables release moisture as they cook, so give them time to soften and then let that moisture evaporate. Youll notice the mixture becoming more concentrated and intensely flavored.
Awaken the spices:
When you add the smoked paprika, oregano, thyme, and chili flakes, stir constantly for that full minute. This brief toasting releases their essential oils and transforms the aroma of your kitchen instantly.
Create your sauce base:
As you pour in those tomatoes, tomato paste, lentils and stock, watch how the colors meld together into a rich red sauce. Season well here, as the lentils will absorb some of that seasoning as they cook.
Simmer to perfection:
During the 20-25 minute simmer, the magic happens as lentils soften and the sauce thickens. Youll know its ready when the lentils are tender but still have a slight bite to them.
Begin the layering:
This is where patience pays off as you create your lasagne architecture right in the same pan. Start with a good base of sauce to prevent sticking.
Build your layers:
When adding the ricotta, use the back of a spoon to gently spread it over the pasta sheets. Sprinkle the cheeses evenly to ensure every bite has that perfect cheese pull.
Bake covered, then uncovered:
The foil protection for the first part of baking prevents the top from burning while the pasta cooks. That final uncovered bake creates that irresistible golden cheese crust that makes everyone reach for seconds.
Rest before serving:
Those 10 minutes of resting time arent just tradition, theyre essential for the lasagne to set properly. Your patience will be rewarded with slices that hold their shape beautifully.
Product image
Dries dishes, utensils, and cookware neatly after cooking, keeping your countertop organized and clutter free.
Check price on Amazon
Slices of One-Pan Smoky Veggie Lentil Lasagne reveal layered red lentil bolognese, ricotta, and sheets on a white plate. Pin It
Slices of One-Pan Smoky Veggie Lentil Lasagne reveal layered red lentil bolognese, ricotta, and sheets on a white plate. | happysfenj.com

My friend Sarah, who claims to detest lentils with the passion of a thousand suns, took one bite of this lasagne and went completely silent. I watched nervously as she methodically worked her way through the entire serving, finally looking up to say, Whatever you just did to those lentils, keep doing it. That moment confirmed what Id suspected all along, that this wasnt just a convenient one-pan meal, but something truly special that could change minds and create connections. Now its become my signature dish for vegetarian skeptics and lentil haters alike.

Making It Ahead

Ive learned that this lasagne actually improves with time, developing deeper flavors as it sits. You can prepare the entire veggie bolognese mixture up to two days ahead and store it in the refrigerator, which somehow lets the smoked paprika work its magic even more thoroughly. When ready to assemble, just warm the sauce slightly before layering to ensure the pasta cooks evenly. Ive even assembled the entire dish the night before a dinner party, kept it refrigerated, and then simply added an extra 10-15 minutes to the covered baking time, which resulted in perhaps the most flavorful version Ive ever made.

Serving Suggestions

While this lasagne is certainly hearty enough to stand alone, Ive found a few simple accompaniments that elevate the entire meal experience. A peppery arugula salad dressed with just lemon juice, olive oil and a crack of black pepper creates this beautiful fresh contrast to the rich lasagne. For a truly comforting experience, I sometimes serve small portions of garlic bread alongside, perfect for catching any stray sauce on your plate. And dont underestimate the power of a good wine pairing, my personal favorite being a medium-bodied Montepulciano that stands up to the smoky flavors without overwhelming them.

Variations Worth Trying

After making this recipe countless times, Ive discovered some variations that keep it exciting even for regular rotation. Swapping half the mushrooms for chopped walnuts adds this incredible texture and earthy richness that takes it in a whole new direction. Adding a layer of wilted spinach between the pasta sheets introduces a beautiful color contrast and sneaks in extra nutrition without changing the character of the dish. During summer months, I sometimes fold fresh corn kernels into the sauce for little bursts of sweetness that play beautifully against the smoky background.

  • For a more pronounced Mediterranean flavor, add a handful of chopped olives and a teaspoon of capers to the sauce during the last five minutes of simmering.
  • If youre serving heat-sensitive guests, replace the chili flakes with a teaspoon of smoked sweet paprika for warmth without the burn.
  • When fresh herbs are abundant, tuck whole basil leaves between the layers along with the cheese for aromatic pockets of flavor throughout.
Product image
Blend smoothies, sauces, and shakes quickly for easy breakfasts, snacks, and meal prep.
Check price on Amazon
A rustic plate of One-Pan Smoky Veggie Lentil Lasagne served with basil, salad, and crusty bread for dinner. Pin It
A rustic plate of One-Pan Smoky Veggie Lentil Lasagne served with basil, salad, and crusty bread for dinner. | happysfenj.com

Every time I make this smoky veggie lentil lasagne, I think about how cooking is really about transformation, not just of ingredients but of moments. Whether youre feeding a crowd or simply treating yourself after a long week, this dish brings that perfect balance of comfort and pride that comes from creating something truly delicious.

Recipe FAQs

Can I make this gluten-free?

Yes, simply substitute gluten-free lasagne sheets. The rest of the ingredients are naturally gluten-free, making this an easy adaptation.

How long does it keep in the refrigerator?

Store cooled portions in an airtight container for up to 4 days. The flavors develop and the texture holds beautifully when reheated.

Can I freeze this lasagne?

Absolutely. Wrap individual portions or the entire pan tightly and freeze for up to 3 months. Thaw overnight in the refrigerator before reheating.

What can I use instead of ricotta?

Cottage cheese blended smooth, cashew cream, or vegan ricotta alternatives work well. The texture will remain creamy and satisfying.

Do I need to cook the lentils first?

No, dried red lentils cook directly in the vegetable sauce. They simmer for 20-25 minutes until tender and absorb all the flavorful seasonings.

Can I add more vegetables?

Feel free to incorporate spinach, eggplant, or bell peppers. The sauce base is versatile enough to handle additional vegetables without overwhelming the dish.

One-Pan Smoky Veggie Lentil Lasagne

Vibrant layers of smoky vegetable bolognese with red lentils and melted cheese, all cooked in a single pan for easy cleanup.

Prep Time
25 minutes
Time to Cook
50 minutes
Overall Time
75 minutes
Created by Lily Hudson

Recipe Type Oven-Made Comforts

Skill Level Medium

Cuisine Type Italian-Inspired

Makes 6 Number of Servings

Diet Preferences Vegetarian Option

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

Step-by-Step

Step 01

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

Step 02

Build the Vegetable Foundation: Stir in minced garlic, diced carrots, celery, and red bell pepper. Cook for 5 minutes until vegetables are just tender.

Step 03

Incorporate Umami Vegetables: Add chopped mushrooms and diced zucchini. Sauté for 5 to 6 minutes until softened and any excess moisture has evaporated.

Step 04

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

Step 05

Build the Sauce: 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 Oven: Preheat oven to 350°F.

Step 08

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

Step 09

First Cheese Layer: Dollop half the ricotta over the lasagne sheets, then sprinkle with one third of the mozzarella and Parmesan.

Step 10

Second Bolognese and Cheese Layers: Spread half the reserved vegetable bolognese over the cheese layer. Top with more lasagne sheets and repeat the layering: ricotta, mozzarella, Parmesan, and the remaining vegetable bolognese.

Step 11

Top and Cover: Finish with a final layer of lasagne sheets and sprinkle the remaining mozzarella and Parmesan on top. Cover the pan with foil.

Step 12

Initial Bake: Bake for 25 minutes covered with foil.

Step 13

Final Bake and Brown: Remove foil and bake for 10 to 15 minutes until golden brown and bubbling.

Step 14

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

Tools Needed

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

Allergy Details

Always check ingredients for allergens. Not sure? Ask your doctor.
  • Contains dairy: ricotta, mozzarella, Parmesan
  • Contains gluten in lasagne sheets
  • Use gluten-free lasagne sheets for gluten-free preparation
  • Use vegan cheese alternatives for dairy-free preparation

Nutrition (per portion)

Numbers here are for information, not as health advice.
  • Caloric Value: 395
  • Fat Content: 13 g
  • Carbohydrates: 50 g
  • Protein Amount: 18 g