Skip to main content

Spinach Lasagne

This wholesome spinach lasagne offers a sophisticated twist on the classic Italian favourite. By using a trio of white, red, and yellow onions, the base develops a deep, natural sweetness that pairs beautifully with the earthy spinach and zesty lemon-infused ricotta. It is a vibrant vegetarian dish that prioritises fresh flavours and textures, swapping heavy bechamel for a lighter stock-based sauce and nutrient-dense whole-wheat pasta sheets.

Perfect for a Sunday family lunch or a midweek meal-prep option, this hearty bake is both comforting and health-conscious. The addition of fresh spring onions and dried oregano provides a fragrant herb profile that elevates the dish beyond standard vegetarian fare. Serve it alongside a crisp green salad or some steamed tenderstem broccoli for a balanced, delicious homemade dinner.

Video picks

Continue reading below

Ingredients for Spinach Lasagne

  • 2 tablespoons olive oil

  • 6 large onions (2 white, 2 red, 2 yellow), halved and thinly sliced

  • 6 cloves garlic, chopped

  • 350ml lowfat chicken or vegetable stock, divided

  • 6 spring onions, thinly sliced

  • 1 tablespoon dried oregano

  • 2 teaspoons salt (preferably sea salt), plus more to season

  • 1 teaspoon freshly ground black pepper, plus more to season

  • 9 whole-wheat lasagne noodles

  • 2 packages (250g each) frozen spinach

  • 1 tablespoon salted butter

  • 1 tablespoon plain flour

  • 1 egg

  • 250g part-skim ricotta

  • Grated zest of 1/2 lemon

  • Olive oil cooking spray

  • 240ml grated Parmesan, divided

Heat oven to 191°C. In a large sauté pan over medium heat, heat oil. Add onions and garlic; toss to coat. Add 240ml stock; cover and reduce heat; simmer until onions are soft, 20 minutes. Reserve 120ml liquid. Add spring onions, oregano, salt and pepper to onion mixture; increase heat to medium and cook, stirring, until liquid evaporates, 20 minutes. Cook noodles as directed on package; drain and blot dry. Cook spinach as directed on package; drain, squeeze dry, and season with salt and pepper. In a small saucepan over medium heat, melt butter. Add flour; stir until roux is brown, 2 to 3 minutes. Add remaining 120ml stock to reserved liquid; whisk into roux until thick, 5 minutes. In a bowl, beat egg; stir in ricotta and zest. Coat a 9" x 13" pan with cooking spray; spread half of stock-roux mixture on bottom. Line pan with 3 noodles; layer on half of onion and ricotta mixtures, half of spinach and 1/3 cup Parmesan. Repeat layer with 3 noodles, remaining onion and ricotta mixtures and spinach, and 1/3 cup Parmesan. Top with remaining 3 noodles, half of stock-roux mixture and 80ml grated Parmesan. Cover with foil; bake until light brown, 50 minutes. Reduce heat to 163°C; remove foil and bake 15 minutes more. Let lasagne sit 15 minutes; serve.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
flu eligibility checker

Ask, share, connect.

Browse discussions, ask questions, and share experiences across hundreds of health topics.

symptom checker

Feeling unwell?

Assess your symptoms online for free

Sign up to the Patient newsletter

Your weekly dose of clear, trustworthy health advice - written to help you feel informed, confident and in control.

Please enter a valid email address

By subscribing you accept our Privacy Policy. You can unsubscribe at any time. We never sell your data.