Pumpkin/assets/datapack/data/minecraft/recipe/crafting_table.json

{
  "type": "minecraft:crafting_shaped",
  "key": {
    "#": "#minecraft:planks"
  },
  "pattern": [
    "##",
    "##"
  ],
  "result": {
    "id": "minecraft:crafting_table"
  },
  "show_notification": false
}