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

{
  "type": "minecraft:crafting_shapeless",
  "category": "redstone",
  "group": "wooden_button",
  "ingredients": [
    "minecraft:acacia_planks"
  ],
  "result": {
    "count": 1,
    "id": "minecraft:acacia_button"
  }
}