Preheat your oven to 350°F (175°C).

Create the flax egg by mixing ground flaxseed with water and letting it thicken for 5 minutes.

In a mixing bowl, cream together vegan butter and brown sugar for about 3 minutes.

Add the flax egg and vanilla extract to the creamed mixture and mix until well combined.

Sift together flour, baking powder, salt, and spices in a separate bowl; then mix with wet ingredients until just combined.

Roll the dough out to about 1/4 inch thick on a floured surface.

Cut out shapes using cookie cutters and place on a lined baking sheet.

Bake for 7 to 10 minutes, until edges are firm but centers are soft.

Brush melted vegan butter on cookies and sprinkle with cinnamon-sugar while cooling.

For an indulgent touch, stuff cookies with melted vegan chocolate.