To get a really great gluten-free vegan cookie, start with a really great cookie. One that plays well with gluten-free flour and won’t miss the eggs. In this case, it’s Dick’s Hermits. Crisp on the outside, soft and chewy on the inside, these classic New England molasses-spice cookies make the mouth tingle with delight. My mother-in-law Dorothy, nicknamed “Dick,” (see Dick’s Coffee Cake for that story) spoiled her kids with these cookies. With a little culinary sleight of hand, we now can spoil just about everybody. It doesn’t take much—just gluten-free “1-1” flour (from Trader Joe’s or King Arthur Baking Company, for example) and a little ground flaxseed. The flour swaps cup-for-cup for all-purpose…