If there are NO nut allergies in your family you can start after she turns 2 and see if any reactions occur, if she has no reaction then continue. If there ARE allergies to nuts in the family wait until she is 3. I have nut allergies so won't be giving my daughter any until then. The same goes for any other high allergy foods, such as shelled seafood, I have allergies to that as well so we are holding off for another year. As much as I can't wait to let her have a peanut butter and jam sandwich I know this is the best thing for her...and really, she doesn't even know she is even missing out.