Found out the hard way recently that my daughter is allergic to pine nuts. Actually, all nuts - peanuts and tree nuts. Not violently allergic, where trace amounts throw her into fits, but you get the gist.
So, my favorite quick summer meal is now due for a makeover. If you couldn't use nuts of any sort in pesto, what would you do? I realize that some recipes don't use pine nuts anyhow, so I can certainly just omit them (maybe add a bit more parmesan, I guess). But has anyone ever tried or found a substitute for the nuttiness and creaminess that pine nuts provide?