renewable-resources/data/renewable/recipe/red_sand.json

{
  "type": "minecraft:crafting_shapeless",
  "category": "building",
  "ingredients": [
    {
      "item": "minecraft:sand"
    },
    {
      "item": "minecraft:sand"
    },
    {
      "item": "minecraft:sand"
    },
    {
      "item": "minecraft:sand"
    },
    {
      "item": "minecraft:red_dye"
    }
  ],
  "result": {
    "id": "minecraft:red_sand",
    "count": 4
  }
}