1. Cook the potatoes in salted water for 30 minutes with the skin on.
Slice the onion and sauté it in a pan with olive oil.
Cut the tofu into thin slices.
Once the onions become translucent, add the smoked tofu slices to the pan and brown them. Set aside.
2. In a small saucepan, pour the vegetable broth and heat it. Add the potato starch and stir for a few minutes until the mixture thickens. Use a whisk to eliminate lumps.
Incorporate the soy milk or cream, onion powder, pepper, nutritional yeast, oil, and white wine. Mix until you obtain a thick and creamy mixture.
3. Peel the potatoes and cut them into slices.
In a dish, place half of the potatoes. Add half of the onions and tofu slices, and half of the cheese.
Repeat the process: cover with potatoes, the remaining onions and tofu slices, then evenly pour all the remaining cheese.
Season with pepper and bake at 220°C for 15-20 minutes.