Instructions

  1. Combine first 7 ingredients in a small bowl and mix to combine.
  2. Season to taste with salt and pepper.
  3. Add onion and chicken and stir to coat evenly.
  4. Split bun in half and place on a baking sheet.
  5. Divide mixture between the two sides and then top with grated cheese.
  6. Bake until cheese melts and chicken mixture bubbles.
  7. Allow to cool slightly before eating.
  8. Enjoy!