Slice the tops off of the patty pan squash with a knife, set aside.
Slice tops off of the 8-ball zucchini, discard.
Thinly slice remaining squash with a mandolin if possible, slices should be thin.
Add sliced squash, plus the tops of the patty pan squash into a bowl and add parsley, zest, shaved parmesan, arugula, use as much as you want, to taste.
Whisk together a fresh lemon and olive oil dressing then pour over the squash and toss very gently.
Recipe by Proud Italian Cook at https://www.prouditaliancook.com/2013/07/patty-pan-squash-carpaccio-for-a-hot-summer-night.html