Would love to make macaroons, but we have tree nut allergies in the family; substitutions for almonds?

I've seen plenty of recipes using ordinary flour/cornstarch, and others using seeds such as sunflower and even coconut (but that's a tree nut so I'm guessing it's a no-go). Pastry chef Stella Parks talks about using these substitutes at her site bravetart - she's amazing and her macarons are the best. Do have a look if you're interested!

I use cake flour and I grate malted milk balls and sift out the chocolate. It works very well.
We can not find sources for peanut free tree nuts.

Pumpkin seeds are pretty mild, and so I imagine that's why they're a good substitute. You can substitute pumpkin seed meal 1:1 in any macaron recipe. If you're making your own in the food processor, I would triple-sift to be certain you have only the finest ground seeds.
Good luck and let us know how they turn out!!

I think you mean Macarons, the little cookies made with merinque. You can replace the almond flour with pistachio or hazelnut flour.

This recipe calls for pumpkin seeds: http://honestcooking.com/nut-free-macaron-recipe/