This plugin (for Fabric mod, see Here)allows you to create/modify recipes for any items. Simply add this plugin, launch you server. The plugin will automatically create a yml file in your plugins folder, then EasyRecipes folder. Then, you can add recipes.

Two default recipes are already given: easy golden apple and easy cobwebs.

You may remove them if you don't like them, or keep them. To create a new recipe, use the same format as the other recipes (see below), making sure to include each ingredient name and the result.

Example recipes

gold apple (already included)

  easy_golden_apple:
    shape:
      - "NGN"
      - "GAG"
      - "NGN"
    ingredients:
      N: AIR
      G: GOLD_INGOT
      A: APPLE
    result: GOLDEN_APPLE

experience bottle recipe:

  easy_experience_bottle:
    shape:
      - "NLN"
      - "LGL"
      - "NLN"
    ingredients:
      N: AIR
      G: GLASS_BOTTLE
      L: LAPIS_LAZULI
    result: EXPERIENCE_BOTTLE

Reload recipes

once you add or make change, Just simply use the command

/easyrecipes reload 

with OP and you're done! No server restart needed.