Sharing recipes

You can not share recipes directly with another user, and another user will not find your recipes through a search. Your recipes will be displayed in the search results only when you perform a search.

There is a work around.
User1 creates a Recipe and logs it to a Meal.
User2 opens User1's Diary (shared with public, friends only, or locked with a key)
User2 clicks Quick Tools and copies User1's Meal to his/her Diary.

From the MFP Help pages...
myfitnesspal.desk.com/customer/portal/articles/304780-can-i-share-recipes-with-other-users-
myfitnesspal.desk.com/customer/portal/articles/11478-can-i-copy-meals-from-my-friends-
myfitnesspal.desk.com/customer/portal/articles/201687-how-do-i-make-my-diary-visible-to-other-users-