Cut the courgettes in half and place them on a baking tray.
Sprinkle them with salt and olive oil, and bake for around 40 minutes at 180 degrees Celsius.
Scoop the flesh out of the courgettes and put it inside a colander, to drain the extra liquid.
Chop it on a wooden board using a large knife until it becomes creamy. You can also use a blender.
Put the flesh in a bowl and mix with the Greek yogurt, minced garlic, finely chopped dill, salt and pepper.
Leave in the fridge for at least one hour, to cool down, before serving.