GNOME Recipes is a recipe viewer for the GNOME desktop. It's not just a UI to some web-based recipe service, but currently they are collecting their own recipes -- via BugZilla in fact. But there is also a request to use WikiBooks recipes as a source for a more diverse selection of recipes and in many different languages.
GNOME Recipes provides a GTK3 UI with all the basics of an electronic cookbook, similar to the many different websites that have been around for years.
Those wishing to learn more about GNOME Recipes can see this new blog post by Clasen or his original post about this new app from earlier in the month. There is a Flatpak package for those wishing to try out GNOME Recipes.