Hidden Recipe Book
You can download Hidden Recipe Book on CurseForge and Modrinth:
  CurseForge:   https://curseforge.com/minecraft/mc-mods/hidden-recipe-book
  Modrinth:      https://modrinth.com/mod/hidden-recipe-book
To keep a better overview of all mods, the issue tracker is located in a separate repository.
  For issues, ideas, suggestions or anything else, please follow this link:
    -> Issue Tracker
Because of the way mod loader files are bundled into one jar, some extra information is needed to do a PR.
  A wiki page entry about it is available here:
    -> Pull Request Information
Requires the library mod Collective.
Hidden Recipe Book is a simple client-side mod which can toggle the visibility of the recipe button in all crafting GUI screens. It does not have to be installed in the server. Contains a few config options for when to send a message and disabling features. Also works on the furnace GUI.
Has a hotkey (by default Tab) which can toggle the visibility of the recipe button. Works when pressed with crafting grid visible. It is the same hotkey as the player list, but they won't interfere with each other.
Configurable: ( how do I configure? )
shouldHideRecipeBook (default = true): If the recipe book should be hidden by default on first launch of the client.
allowRecipeBookToggleHotkey (default = true): If the recipe book visibility can be toggled with the hotkey.
showMessageOnRecipeBookToggle (default = false): If a message should be sent whenever the recipe book is shown/hidden.
What it does:
Hotkey (by default Tab):
When pressing the hotkey:
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You may freely use this mod in any modpack, as long as the download remains hosted within the CurseForge or Modrinth ecosystem.
Serilum.com contains an overview and more information on all mods available.
Comments are disabled as I'm unable to keep track of all the separate pages on each mod.
For issues, ideas, suggestions or anything else there is the Github repo. Thanks!