My daughter loves fresh basil?

my three year old loves fresh basil. she would sit there and eat the full plant if i would let her but im unsure if its okay to eat lots of it. im not much of a cook but always thought you added a little basil to meals to give it a flavour. is it okay just to eat the basil leaves as if you were eating a salad. or should i only alow her a few of the leaves at a time. thanks in advance x