Delia Smith’s Vegetarian Lasagne is a delectable fusion of vibrant peppers, courgette, and sweet potato bathed in a sumptuous tomato sauce, layered with lasagne sheets, and crowned with a cheesy symphony. With a quick 40-minute bake time, this recipe serves 4-5, offering a swift and savory culinary experience.
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🧡 Why You’ll Love This Vegetarian Lasagne Recipe:
- Wholesome Vegetables: Delia Smith’s Vegetarian Lasagne is packed with vibrant and nutritious vegetables like peppers, courgette, and sweet potato.
- Satisfying Layers: Enjoy the comfort of layered lasagne sheets, creating a hearty and filling dish.
- Flavorful Fusion: The recipe blends Italian seasoning, garlic, and chili flakes for a burst of delicious and harmonious flavors.
❓ What Is Delia Smith Vegetarian Lasagne Recipe?
Delia Smith’s Vegetarian Lasagne combines roasted vegetables with a zesty tomato sauce, layered between lasagne sheets, and topped with a cheesy bechamel sauce. The result is a mouthwatering dish with a perfect balance of flavors.

🌶 Delia Smith Lasagne Vegetarian Ingredients
- 2 yellow or red peppers, seeds removed, cut into roughly 2cm/¾in chunks
- 1 courgette, about 300g/10½oz, quartered lengthways and cut into roughly 2cm/¾in chunks
- 1 large sweet potato, peeled and cut into roughly 2cm/¾in chunks
- 3 tbsp extra virgin olive oil
- 1 large onion, finely chopped
- ½ tsp dried chilli flakes
- 2 garlic cloves, crushed
- 2 x 400g tins chopped tomatoes
- 2 tsp Italian seasoning or dried oregano
- 1 vegetable stock cube
- 200ml/7fl oz cold water
- 100g/3½oz young spinach leaves (optional)
- 9–10 dried lasagne sheets
- salt and freshly ground black pepper
For the cheese sauce
- 75g/2½oz plain flour
- 75g/2½oz butter, cubed
- 750ml/1¼ pint milk, semi-skimmed or full-fat
- 125g/4½oz mature cheddar, coarsely grated
- 75g/2½oz grated mozzarella, or extra cheddar
🥘 How To Make Delia Smith Lasagne Vegetarian
- Start by heating the oven to 200C/180C Fan/Gas 6.
- Place the sweet potato, zucchini, and peppers on a big baking sheet.
- Add salt and pepper, then drizzle with 2 tablespoons of the oil and toss with the other ingredients.
- For 30 minutes, or until softened and slightly browned.
- Toss the onion in the remaining oil and cook it slowly for 5 minutes, stirring it often, while the veggies roast.
- For a few more seconds, add the garlic and chili. Combine the tomatoes, Italian spice (or dried oregano), and broken up stock cube.
- Combine with the water and slowly bring it to a simmer. For 10 minutes, keep stirring. Not to be used.
- In a big saucepan, heat the milk, butter, and flour over medium-low heat. The sauce will get thicker and smoother as you keep whisking it with a big metal whisk.
- When cooking in a nonstick pan, use a whisk with a plastic cover. Using your best judgment, add about two-thirds of the cheeses and season to taste.
- Remove the veggies from the oven and add them to the pan with the tomato sauce.
- After you add the spinach, cook for three minutes. Add a lot of ground black pepper and salt to taste.
- Place one layer of lasagne on top of a third of the vegetable filling in a 2½–3 liter/4½–5 pint ovenproof lasagne dish. Attach a second layer of lasagne and another third of the veggie mixture on top. It’s okay if it doesn’t cover the whole thing.
- Add just under half of the cheese sauce on top, and then layer the rest of the veggie mixture on top very carefully.
- Lastly, add the last layer of lasagna and the rest of the cheese sauce. Decorate with the cheese that was saved.
- There should be soft pasta and golden, bubbly topping after 35 to 40 minutes in the oven. Set the filling down for 5 minutes before cutting.
💭 Recipe Tips:
- Even Roasting: Ensure even roasting of vegetables by tossing them with oil and seasoning before placing them on a baking sheet.
- Layering Technique: While layering lasagne sheets and filling, don’t worry if the sheets don’t cover the entire dish; it adds to the rustic charm.
- Cheese Topping: Save some cheese to sprinkle on top before baking for a golden, bubbly finish.

🥗 What To Serve With Delia Smith Vegetarian Lasagne?
Pair this delightful lasagne with Crisp Green Salad, Garlic Bread or Breadsticks, Roasted Vegetables, Herb-infused Olive Oil, Herb-infused Quinoa or Couscous.
🎚 How To Store Leftovers Vegetarian Lasagne?
- In the Fridge: Store Leftovers Vegetarian Lasagne in an airtight container in the fridge for up to 3 days.
- In the Freezer: Store Leftovers Vegetarian Lasagne in a freezer-safe container for up to 2 months.
🥵 How To Reheat Leftovers Vegetarian Lasagne?
- In the oven: Cover Leftovers Vegetarian Lasagne with foil reheat for 15-20 minutes.
- In the microwave: Reheat Leftovers Vegetarian Lasagne in a microwave-safe dish,and heat on medium for 2 to 3 minutes.
- In the air-fryer: Place Leftovers Vegetarian in a heatproof container and reheat for 8-10 mins at 320°F.
FAQ’S
How Do I Prevent The Lasagne Sheets From Sticking Together?
Ensure the lasagne sheets are cooked according to package instructions and toss them with a bit of oil after draining to prevent sticking.
Can I Use Whole Tomatoes Instead Of Chopped Tomatoes?
Yes, you can use whole tomatoes and crush them as you add them to the sauce; it’s a suitable alternative.
What Should I Do If The Lasagne Becomes Too Dry During Baking?
If the lasagne seems too dry, cover it with foil during baking to retain moisture and prevent excessive drying.
How Do I Know When The Lasagne Is Done Baking?
Look for a soft texture in the pasta and a golden, bubbly topping after 35 to 40 minutes in the oven to determine when it’s done.
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Delia Smith Vegetarian Lasagne Nutrition Facts
- Calories: 295
- Total Fat: 17g
- Saturated Fat: 9.1g
- Trans Fat: 0ggrams
- Polyunsaturated Fat: 1g
- Monounsaturated Fat: 5.3g
- Cholesterol: 71mg
- Sodium: 444mg
- Total Carbohydrates: 18g
- Dietary Fiber: 2.4g
- Sugars: 3.8g
- Protein: 18g
- Potassium: 422.4mg

Delia Smith Lasagne Vegetarian
Description
Delia Smith’s Vegetarian Lasagne is a delectable fusion of vibrant peppers, courgette, and sweet potato bathed in a sumptuous tomato sauce, layered with lasagne sheets, and crowned with a cheesy symphony. With a quick 40-minute bake time, this recipe serves 4-5, offering a swift and savory culinary experience.
Ingredients
For the cheese sauce
Instructions
- Start by heating the oven to 200C/180C Fan/Gas 6.
- Place the sweet potato, zucchini, and peppers on a big baking sheet.
- Add salt and pepper, then drizzle with 2 tablespoons of the oil and toss with the other ingredients.
- For 30 minutes, or until softened and slightly browned.
- Toss the onion in the remaining oil and cook it slowly for 5 minutes, stirring it often, while the veggies roast.
- For a few more seconds, add the garlic and chili. Combine the tomatoes, Italian spice (or dried oregano), and broken up stock cube.
- Combine with the water and slowly bring it to a simmer. For 10 minutes, keep stirring. Not to be used.
- In a big saucepan, heat the milk, butter, and flour over medium-low heat. The sauce will get thicker and smoother as you keep whisking it with a big metal whisk.
- When cooking in a nonstick pan, use a whisk with a plastic cover. Using your best judgment, add about two-thirds of the cheeses and season to taste.
- Remove the veggies from the oven and add them to the pan with the tomato sauce.
- After you add the spinach, cook for three minutes. Add a lot of ground black pepper and salt to taste.
- Place one layer of lasagne on top of a third of the vegetable filling in a 2½–3 liter/4½–5¿ pint ovenproof lasagne dish. Attach a second layer of lasagne and another third of the veggie mixture on top. It’s okay if it doesn’t cover the whole thing.
- Add just under half of the cheese sauce on top, and then layer the rest of the veggie mixture on top very carefully.
- Lastly, add the last layer of lasagna and the rest of the cheese sauce. Decorate with the cheese that was saved.
- There should be soft pasta and golden, bubbly topping after 35 to 40 minutes in the oven. Set the filling down for 5 minutes before cutting.
Notes
- Even Roasting: Ensure even roasting of vegetables by tossing them with oil and seasoning before placing them on a baking sheet.
Layering Technique: While layering lasagne sheets and filling, don’t worry if the sheets don’t cover the entire dish; it adds to the rustic charm.
Cheese Topping: Save some cheese to sprinkle on top before baking for a golden, bubbly finish.