Whisk ground flaxseed meal and water in a small bowl; set aside for 5 minutes until thickened.
In a stand mixer, cream vegan butter and 1 cup sugar until light and fluffy (approximately 3 minutes).
Add the flax mixture, vanilla extract, and almond extract to the butter; beat until combined.
In a separate bowl, whisk together flour, cornstarch, baking powder, baking soda, and salt.
Gradually incorporate the dry ingredients into the wet ingredients on low speed until a dough forms.
Cover and refrigerate the dough for 30 minutes.
Preheat oven to 350°F (175°C) and line baking sheets with parchment paper.
Scoop 1.5-tablespoon portions of dough, roll into balls, and coat in the remaining 1/4 cup sugar.
Place on baking sheets 2 inches apart and bake for 10-12 minutes until edges are set but centers are still soft.
Cool on the baking sheet for 5 minutes before transferring to a wire rack.