Instructions

  1. Preheat grill (broiler).
  2. Toast the bread in a toaster.
  3. Place grated apple and onion in a sieve and with the back of a spoon squeeze out excess liquid.
  4. Transfer to a bowl and mix with the cheese and walnuts.
  5. Season with the pepper and salt if needed.
  6. Divide the mixture among the toast and completely cover each piece.
  7. Place on a baking sheet and grill until cheese is bubbling.
  8. Serve immediately.