Haven't tried this, but puff pastry shells contain butter. This is not dairy free.
Two things I love about this: 1) It's dairy-free, and we have dairy allergies. 2) It was so good that it didn't seem like the act of desperation that it really was - I couldn't get to the grocery store and puff pastry shells emerged as the main ingredient in the house. Because my kids are vegetable-phobic I skipped the carrots & parsley (too hard to camouflage). I slivered & diced regular (not pearl) onions & celery tiny beyond recognition, and sauteed them well, then cooked in a bit of added water to soften. Oddly enough, when I put the shell lid on, the fact that the food had "hats" kept the kids distracted long enough that they actually tasted it before passing judgment - one asked if I could put the recipe in the "keeper file"! I like the suggestion of freezing the chicken mixture - that would make a wonderful, quick dinner. Thank you for sharing this, SuzanneThePainter!