tastytoasters/src/main/resources/data/tastytoasters/recipes/butter.json

{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    "AAA",
    "ABA",
    "AAA"
  ],
  "key": {
    "A": {
      "item": "minecraft:milk_bucket"
    },
    "B": {
      "item": "minecraft:calcite"
    }
  },
  "result": {
    "item": "tastytoasters:butter",
    "count": 8
  }
}