Salt and drain the courgettes

• Thinly slice the courgettes.
• Generously season them with salt and leave them to drain.

Rinse and pre-bake the courgettes

• Wash and drain the courgettes.
• Cook them in the oven.

Make the feta and spinach sauce

• Fry the baby spinach in a pan.
• Melt the feta with the mascarpone.
• Add the spinach, the lemon zest and a generous amount of pepper.

Build the layers

• Layer the courgettes in the baking dish.
• Add a layer of lasagna sheets and top with the feta sauce.
• Repeat the layers, finishing with courgettes, pine nuts and basil.

Bake the lasagna

• Cover the dish and bake for more flavour.