Smoky Veggie Lentil Lasagne (Printable)

Hearty layers of smoky lentils and vegetables baked with rich béchamel in one pan.

# What You'll Need:

→ Vegetable Bolognese

01 - 2 tablespoons 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 - 8.8 ounces mushrooms, chopped
07 - 2 medium zucchini, diced
08 - 1 teaspoon smoked paprika
09 - 1 teaspoon dried oregano
10 - 0.5 teaspoon dried thyme
11 - 0.5 teaspoon chili flakes, optional
12 - 1 tablespoon tomato paste
13 - 14 ounces canned chopped tomatoes
14 - 1 tablespoon soy sauce
15 - 4.4 ounces dried red lentils, rinsed
16 - 2 cups vegetable stock
17 - Salt and black pepper to taste

→ Béchamel Sauce

18 - 1.4 ounces unsalted butter
19 - 1.4 ounces all-purpose flour
20 - 2.5 cups whole milk
21 - 0.25 teaspoon ground nutmeg
22 - 2.1 ounces grated mature cheddar or vegetarian hard cheese
23 - Salt and white pepper to taste

→ Assembly

24 - 9 to 12 no-boil lasagne sheets
25 - 1.8 ounces grated mozzarella or vegetarian cheese for topping
26 - Fresh basil leaves, optional for garnish

# How-To Steps:

01 - Preheat oven to 400°F (200°C or 180°C fan) or Gas mark 6.
02 - Heat olive oil in a large ovenproof deep frying pan over medium heat. Add chopped onion and minced garlic, sauté for 2 minutes until fragrant.
03 - Add diced carrot, red bell pepper, mushrooms, and zucchini to the pan. Cook for 5 to 6 minutes until vegetables are softened.
04 - Stir in smoked paprika, oregano, thyme, chili flakes, and tomato paste. Cook for 1 minute to bloom the spices.
05 - Add canned tomatoes, soy sauce, red lentils, and vegetable stock to the pan. Bring to a simmer, cover, and cook for 15 to 20 minutes, stirring occasionally, until lentils are tender and sauce has thickened. Season with salt and pepper to taste.
06 - In a separate medium saucepan, melt butter over medium heat. Stir in flour and cook for 1 minute. Gradually whisk in milk, stirring constantly until thickened, approximately 5 minutes. Remove from heat and stir in nutmeg, cheese, salt, and white pepper.
07 - Remove half of the vegetable bolognese from the pan and set aside. Layer one-third of the béchamel sauce over the remaining sauce in the pan. Top with a layer of lasagne sheets, breaking them to fit as needed.
08 - Spread half of the reserved bolognese over the pasta layer. Pour another third of béchamel sauce over the bolognese and add another layer of lasagne sheets.
09 - Top with remaining bolognese, follow with final lasagne sheet layer, and pour remaining béchamel sauce over the top. Sprinkle grated mozzarella cheese over the surface.
10 - Cover the pan loosely with aluminum foil and bake for 25 minutes.
11 - Remove foil and bake for an additional 10 to 15 minutes until the top is golden and the sauce is bubbling at the edges.
12 - Allow the lasagne to stand for 10 minutes before serving. Garnish with fresh basil if desired.

# Expert Advice:

01 -
  • One pan means actual cleanup time back in your evening instead of standing over a sink.
  • Red lentils give the sauce body and earthiness without any meat, plus they're genuinely cheaper than most alternatives.
  • The smoked paprika transforms ordinary vegetables into something that tastes intentional and deeply flavored.
  • It feeds six people generously, or stretches across a few quiet dinners when you're eating alone.
02 -
  • Don't skimp on the simmering time for the lentil sauce—undercooked lentils will be grainy and ruin the whole texture.
  • The béchamel thickens as it cools, so if it seems slightly loose when you pour it, that's actually correct.
  • Cooking the sauce down to a thick consistency before layering prevents the whole lasagne from becoming watery and soggy.
03 -
  • Smoked paprika is non-negotiable; regular paprika will taste flat and one-dimensional by comparison.
  • Rinsing the lentils before cooking removes dust and helps them cook evenly without creating a starchy, gluey texture.
  • Breaking lasagne sheets to fit rather than trying to fold them keeps edges from sticking out and burning.
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