JSON(Assuming all keys are required to be present):
{
  "recipes":
  [
    {
      "input": {"itemName": "ingotIron", "isOreDictionary": true, "isWildcard": false,"damage": 2}
      ,"output": {"itemName": "minecraft:stick", "isOreDictionary": false, "isWildcard": false, "damage": 16, "stackSize": 5}
      ,"experience": 0.5
    }
  ]
}

JSON(Assuming all keys are not required to be present):
{
  "recipes":
  [
    {
      "input": {"itemName": "ingotIron", "isOreDictionary": true, "damage": 2}
      ,"output": {"itemName": "minecraft:stick", "damage": 16, "stackSize": 5}
      ,"experience": 0.5
    }
  ]
}

MineTweaker:
import mods.betterbeginnings.Kiln;
Kiln.addRecipe(<ore:ingotIron:2>, <minecraft:stick:16> * 5, 0.5);