Preheat the oven to 160–170°C.
Put the sage leaves into a saucepan and just cover with olive oil, then put on a very low heat. As soon as the oil is warm, turn the heat off and leave to infuse, stirring gently. Discard the leaves.
Cut the partially defrosted bread into eight very thin slices. Place on a lined baking tray and drizzle with a little olive oil, then bake until the bread is crispy on both sides.
Place the salad leaves on a plate and put the toasts on top.
Cut the persimmons in half – they should be deep orange and really juicy – then cut into wedges as well as you can. Cut the goat’s cheese to a similar size. Lift the persimmon halves carefully on to the toast slices and top with a slice of goat’s cheese. Drizzle the sage-infused oil over the top and season with black pepper.