Preheat the oven at 180° C.
Now: let's start chopping up! In order to assemble this easy dish quickly and smoothly, I recommend to prep all the veggies and set them aside.
1st layer: potato slices on a bed of olive oil. Sprinkle some onion cubes and season with salt, pepper and sage.
2nd layer: arrange courgette slices over the potatoes and season with salt, pepper, garlic, nutritional yeast, Gondino cheese, fresh parsley and a touch of olive oil.
Repeat layers 1 and 2, then cover with a final layer of potatoes. Season with salt, pepper, sage, tomatoes, nutritional yeast, vegan parmesan and a drizzle of olive oil.
Pour ½ an inch of salted water into the corners of the tray, making sure it goes on the bottom of it without ruining the layers.
Bake for 30 to 45 minutes until potatoes are cooked thoroughly. Piercing them with a wooden skewer might help.