cobble_from_stone_slab_double.json

{
  "type": "inspirations:anvil_smashing",
  "result": {
    "block": "minecraft:cobblestone_slab",
    "properties": {
      "waterlogged": "INPUT",
      "type": "double"
    }
  },
  "ingredients": [
    {
      "type": "inspirations:blockstate",
      "block": "minecraft:stone_slab",
      "properties": {
        "type": "double"
      }
    }
  ]
}