Prepare a large baking sheet lined with parchment paper.

In a small bowl, combine sugar and matcha powder and give it a mix. Set aside.

Preheat oven to 350F.

In a large bowl, cream together butter and granulated sugar until light and fluffy.

Add in the beaten egg, vanilla extract and salt.

Sift in all-purpose flour, cream of tartar and baking soda.

Mix with a spatula until it forms a dough.

Use a small cookie scoop to portion out the cookie dough.

Roll the dough in between your palms to form it into a ball and place directly into the matcha-sugar mixture.

Coat the entire surface of the dough ball with matcha and sugar.

Place the dough ball onto the prepared baking sheet, leaving a few inches in between each cookie dough.

Use the back of a lightly flour-dusted flat measuring cup to press down and flatten the cookie dough.

Repeat with the remainder.

Bake the cookies at 350F for 8-10 minutes.

Remove cookies from the oven and cool on a wire rack.