In a large mixing bowl, prepare flax egg by mixing flax and water and letting rest for 5 minutes.
Add softened butter, molasses, almond butter, brown sugar, salt, spices, baking soda and beat on low with a mixer, or vigorously whisk.
Add gluten free baking mix to the wet ingredients and stir with a wooden spoon. Stir until well combined. Your dough should hold its shape when pressed, but not feel dry. I found that 1.5 cups (amount as original recipe is written // adjust if altering batch size) was about the perfect amount, but this will depend on your blend.
Cover and chill dough for at least one hour (preferably overnight).
Once chilled, preheat oven to 350 degrees (176 C). Carefully roll out dough to a little thicker than 1/8 inch between two sheets of plastic wrap or parchment/wax paper, generously sprinkling the bottom layer and the top of the dough with white or brown rice flour before rolling. You don't want it too thin or they'll be too crisp.
Remove top sheet and, working quickly, dip your cookie cutters in rice flour and cut out shapes. Next, lift the plastic wrap (with all of the dough) and place it on a baking sheet or large plate and freeze for 5 minutes to let them firm up. This will make them easier to transfer to your baking sheet for baking.
Next, use a lightly floured spatula to carefully transfer the cookies to a baking sheet, working quickly. Leave 2 inches for spreading.
Bake for 8-10 minutes or until they appear only slightly browned on the edges. They'll continue firming up as they sit on the pan. Let rest on the pan for 2-3 minutes, then transfer to a cooling rack.
Once cooled, decorate with frosting or sprinkle with powdered sugar. I think a perfect, simple frosting option is piping on a mix of 2 cups icing sugar, 1 Tbsp melted butter, and 1-2 Tbsp almond milk (amounts as original recipe is written // adjust if altering batch size). Just make sure it's on the thicker side so it doesn't run.
Store covered at room temperature for several days. Freeze for longer term storage. The batch should make between 25-35 cookies, depending on the size of your cookie cutter / or if you decide not to cut them and roll them into balls.
*If you don't want to cut them out into shapes (as it is a bit onerous with the dough being so tender), after chilling, simply roll 1 Tbsp amounts of dough into balls, freeze for 5 minutes, then bake for 10-12 minutes. *Nutrition information is a rough estimate calculated with 1 1/4 cups GF Pancake Mix, without frosting, and for a batch that makes 30 cookies.