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Slow Cooker Butternut Squash and Lentil Lasagne
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5 from 6 votes

Slow Cooker Butternut Squash and Lentil Lasagne

A rich and tasty slow cooker vegetarian lasagne made with slices of butternut squash and courgette in place of pasta sheets, and a lentil tomato sauce
Course Main Course
Cuisine Slow Cooker
Prep Time 20 minutes
Cook Time 4 hours
Total Time 4 hours 20 minutes
Servings 4
Calories 279kcal


For the lentil tomato sauce:

  • 1 onion
  • 1 clove garlic large
  • 400 g chopped tomatoes
  • 0.5 tsp dried thyme
  • 3 leaves fresh basil torn
  • 1 tin green lentils 410 g tin, 265 g drained

For the vegetable layers:

  • 500 g butternut squash sliced
  • 3 courgettes (zucchini) large, approx 375 g, sliced lengthways
  • 3 leaves fresh basil torn

For the cheese sauce:

  • 250 g ricotta cheese
  • milk a splash
  • 50 g extra mature cheddar cheese grated, I used 30% lighter cheese


  • Spray you slow cooker pot lightly with oil to prevent sticking.
  • Mix the ingredients for the lentil tomato sauce in a large bowl. Place half of the sauce in the base of the slow cooker pot.
  • Add a layer of courgette to cover the lentil sauce. 
  • Add a layer of butternut squash to cover the courgette. Season with salt and pepper and add some more torn basil leaves.
    Vegetarian slow cooker lasagne with layers of butternut squash
  • Repeat, first adding the best of the lentil tomato sauce, then a layer of courgette and another layer of butternut squash, and seasoning/basil.
  • Put the ricotta cheese in a small bowl, add a splash of milk to thin it slightly. Put half of the grated cheese in the ricotta and mix.
  • Spread the ricotta cheese mixture over the top of the butternut squash slices. Top with the remaining cheese. Season with salt and pepper and add a little more basil.
  • Cook on high for 3 hours. Then take the lid off and cook for another hour on high to reduce the liquid in the pot.
  • Allow to cool slightly then slice and serve using a wide spatula.


For this recipe I used a large 5.7 litre slow cooker.


Calories: 279kcal