bedrock-samples/behavior_pack/recipes/grindstone_from_crimson_planks.json

{
    "format_version": "1.16",
    "minecraft:recipe_shaped": {
        "description": {
            "identifier": "minecraft:grindstone_from_crimson_planks"
        },
        "tags": [ "crafting_table" ],
        "pattern": [
          "|_|",
          "# #"
        ],
        "key": {
          "|": {
              "item": "minecraft:stick"
          },
          "#": {
            "item": "minecraft:crimson_planks"
          },
          "_": {
            "item": "minecraft:normal_stone_slab"
          }
        },
        "result": {
          "item": "minecraft:grindstone"
        },
        "priority": 2
    }
}