In a large bowl cream together the vegan butter and sugar until it's light and fluffy. Next add the almond milk or your choice of dairy free milk and mix until combined.
Next add the baking soda, salt, cream of tartar, cornstarch, all purpose flour and mix well. Chill the dough for at least 2 hours or best over night.
Preheat oven to 350F and prepare cookie sheets using a baking mat or parchment paper.
To make the cinnamon sugar mixture, mix together the cinnamon and granulated sugar.
Using a mini cookie scooper, scoop the cough dough into the cinnamon sugar mixture and roll into a ball, then place on cookie sheet.
Bake for 10 minutes, remove and cool on cookie rack.