Preheat the oven to 375°F and line two baking sheets with parchment paper.
In a small bowl, mix the sugar and cinnamon for the coating until combined. Set aside.
In a large bowl, cream together the vegan butter and 1 1/3 cups granulated sugar until light and fluffy. Mix in the applesauce and vanilla extract. Gradually add the flour, cream of tartar, baking soda, and salt to the wet ingredients and mix until a dough forms.
Scoop about 1 1/2 tablespoons of dough, roll into a ball, and then roll the ball in the cinnamon-sugar mixture. Place on the prepared baking sheets.
Bake for 10-12 minutes, or until the edges are golden. Allow to cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.