Name: Jamie Oliver Butternut Lasagne
Prep time: 30 min
Cook time: 45 min
Total time: 1 h 15 min
Yield: 4
Cuisine: British
Ingredients: 1 large butternut squash (peeled, cubed); 2 tbsp olive oil; 1 onion (finely chopped); 2 cloves garlic (minced); 9–12 lasagne sheets; 400 ml milk; 30 g butter; 30 g plain flour; 100 g grated mozzarella or cheddar; 50 g grated parmesan; Fresh sage or thyme; Salt and black pepper; 150 g ricotta; Handful fresh spinach

The Jamie Oliver Butternut Lasagne is a rich, comforting vegetarian bake where sweet roasted butternut squash replaces traditional meat layers. Combined with creamy sauce, herbs, and tender pasta sheets, it creates a dish that feels indulgent yet balanced.

This lasagne serves 6 people and takes about 1 hour 20 minutes from preparation to serving. In this detailed guide, you’ll learn how to roast the squash for maximum flavour, build structured layers, and bake it so the top turns golden while the centre remains creamy but not watery.

What Makes This Worth Making

Naturally sweet and savoury balance
Roasted butternut squash caramelises beautifully, adding depth without needing meat.
Hearty vegetarian centrepiece
It holds structure well and feels substantial enough for gatherings.
Layered texture contrast
Soft squash, creamy sauce, and tender pasta create a balanced bite.
Great for meal prep
It reheats well and slices neatly after resting.
Flexible ingredient swaps
Spinach, ricotta, or sage can be added for variation.

What Is Jamie Oliver Butternut Lasagne?

The Jamie Oliver Butternut Lasagne is a layered pasta bake made with roasted butternut squash, creamy white sauce, and pasta sheets, baked until bubbling and golden.

It follows traditional lasagne structure but replaces meat with roasted vegetables for a lighter yet comforting alternative.

Jamie Oliver Butternut Lasagne Ingredients List

Serves 6

1 large butternut squash (peeled, cubed)
2 tbsp olive oil
1 onion (finely chopped)
2 cloves garlic (minced)
9–12 lasagne sheets
400 ml milk
30 g butter
30 g plain flour
100 g grated mozzarella or cheddar
50 g grated parmesan
Fresh sage or thyme
Salt and black pepper

Optional:

150 g ricotta
Handful fresh spinach

How to Prepare Jamie Oliver Butternut Lasagne – Simple Steps

Step 1: Roast the Butternut Properly

Preheat oven to 200°C.

Toss cubed squash with olive oil, salt, pepper, and sage. Spread in a single layer on a baking tray.

Roast for 25–30 minutes until soft and slightly caramelised at the edges. Browning deepens flavour and prevents bland filling.

Lightly mash half of the squash while leaving some chunks for texture.

Step 2: Prepare the White Sauce

In a saucepan, melt butter over medium heat. Stir in flour and cook 1 minute to remove raw taste.

Gradually whisk in warm milk. Continue stirring until thickened and smooth.

The sauce should coat the back of a spoon. Season lightly with salt and pepper.

Avoid boiling vigorously, which can cause lumps or separation.

Step 3: Build the Vegetable Base

In a pan, cook the onion gently until soft and translucent. Add garlic and cook briefly.

Stir in roasted squash and combine well. Taste and adjust seasoning.

If using spinach, wilt it into the mixture briefly.

Step 4: Assemble the Layers

Preheat oven to 180°C.

Spread a thin layer of white sauce at the base of a baking dish.

Add pasta sheets, then squash mixture, then white sauce. Repeat layers.

Finish with white sauce and sprinkle mozzarella and parmesan on top.

Ensure pasta sheets are fully covered to prevent dry edges.

Step 5: Bake to Perfection

Bake 35–40 minutes until top is golden and edges bubble gently.

If browning too quickly, cover loosely with foil.

Step 6: Rest Before Serving

Allow lasagne to rest 10–15 minutes. This helps it firm up and slice cleanly.

Common Mistakes to Avoid When Making Jamie Oliver Butternut Lasagne

Skipping squash roasting
Raw squash lacks sweetness and depth.
Watery filling
Proper roasting reduces excess moisture.
Overloading layers
Too much filling prevents even cooking.
Dry pasta edges
Always cover sheets fully with sauce.
Cutting immediately after baking
Resting is essential for structure.

Delicious Side Pairings for Jamie Oliver’s Butternut Lasagne

Simple green salad
A lemon dressing cuts through the richness.
Garlic bread
Adds crunch and complements creamy layers.
Roasted green beans
Provide freshness and texture contrast.
Tomato salad
Adds acidity to balance sweetness.
Steamed broccoli
Light vegetable option for a balanced plate.

Expert Tips to Get This Jamie Oliver Butternut Lasagne Just Right

Roast the squash until slightly caramelised
Browning enhances natural sweetness.
Keep the white sauce smooth and medium-thick
Too thin leads to runny lasagne.
Layer evenly
Consistent layering ensures balanced bites.
Bake on the middle rack
Provides even heat distribution.
Rest before slicing
Essential for a neat presentation.

How to Add More Flavour to Jamie Oliver’s Butternut Lasagne

Add nutmeg to the white sauce
Enhances warmth and depth.
Include ricotta layer
Adds creamy richness.
Sprinkle chilli flakes
Introduces mild heat.
Add fresh thyme
Boosts herbal aroma.
Top with toasted breadcrumbs
Creates extra crispness.

How to Adjust Jamie Oliver’s Butternut Lasagne for Kids

Reduce herbs slightly
Add mild cheese
Cut the squash into smaller for a smoother texture
Serve in smaller portions
Keep seasoning gentle

Best Way to Store Jamie Oliver Butternut Lasagne Leftovers

Cool completely before refrigerating
Store in an airtight container up to 3 days
Freeze portions up to 2 months
Reheat only once for best quality

Best Ways to Reheat Jamie Oliver Butternut Lasagne Leftovers

Reheat in the oven at 170°C covered
Add a small splash of milk if dry
Avoid high microwave heat
Allow to rest briefly after reheating

Nutritional Value (Per Serving)

Approximate values:

Calories: 540 kcal
Protein: 18 g
Carbohydrates: 65 g
Fat: 24 g
Fiber: 6 g
Sodium: 620 mg

FAQs

Can I make butternut lasagne ahead of time?

Yes. Assemble the lasagne completely, cover tightly, and refrigerate for up to 24 hours before baking. Let it sit at room temperature for 20–30 minutes before placing it in the oven for even cooking.

Why is my butternut lasagne watery?

Watery lasagna usually happens when the squash isn’t roasted long enough or the white sauce is too thin. Roast until lightly caramelised and ensure the sauce coats the back of a spoon before layering.

Do I need to cook lasagne sheets before layering?

Most modern lasagne sheets are oven-ready and cook directly in the sauce. Just make sure every sheet is fully covered with sauce to prevent dry edges.

Can I freeze butternut lasagne?

Yes. Freeze it either baked or unbaked in airtight containers for up to 2 months. Thaw overnight in the fridge and reheat gently until heated through.

Final Words

This lasagne proves vegetables can be just as satisfying as meat when handled correctly. Proper roasting, balanced layering, and patient baking create a creamy, structured dish that feels comforting yet fresh.

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