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

{
  "type": "minecraft:smelting",
  "category": "blocks",
  "cookingtime": 200,
  "experience": 0.1,
  "ingredient": "minecraft:nether_bricks",
  "result": {
    "id": "minecraft:cracked_nether_bricks"
  }
}