minecraft-assets/data/minecraft/recipe/golden_apple.json

{
  "type": "minecraft:crafting_shaped",
  "category": "misc",
  "key": {
    "#": "minecraft:gold_ingot",
    "X": "minecraft:apple"
  },
  "pattern": [
    "###",
    "#X#",
    "###"
  ],
  "result": {
    "count": 1,
    "id": "minecraft:golden_apple"
  }
}