FWIW, when I was booking recipes I usually gave 'em the level below the level you'd need to actually make the item, on the grounds that that let folks plan and grab ingredients.

Granting 'em on the same level is acceptable at low levels, but IME higher learning-levels are much tougher to succeed at for recipe-learning than for crafting the same recipe once learned.  There's no need to change anything here: just thought I'd compare notes.