But there are no better cookies for sale on Long Island, and very few home-baked ones can compete. Riegler is the chef-owner (and treasurer-secretary) of Vienna Cookie Company in Baldwin.

A 7.5-ounce bag of 10 cookies is $7.99. The base of gluten-free baked goods is often rice flour. Mightylicious partners with a company that mills its rice flour fine enough for baking, Haeler said.