Step 1

Preheat oven to 350 degrees and line two cookie sheets with a silicone baking mat or parchment paper.

Step 2

Using a stand mixer, beat the butter, sugar, brown sugar, eggs, and vanilla until creamy and fluffy.

Step 3

Using a large bowl, whisk together the flour, cornstarch, cream of tartar, baking powder, baking soda, cinnamon and salt.

Step 4

Gradually beat in the dry ingredients into the wet until just combined into a dough.

Step 5

Using a medium ice cream scooper, scoop out a mound of dough into your hand and roll into a ball.

Step 6

Roll the cookie dough balls into the cinnamon sugar mixture.

Step 7

Gently press the dough balls into a thick disk onto the cookie sheets.

Step 8

Bake in the oven for 10-13 minutes or until a light golden colour.

Step 9

Allow to cool completely.

Step 10

Using a stand mixer, beat the butter, powdered sugar, cinnamon, vanilla and heavy whipping cream until creamy and holds a peak.

Step 11

Scoop the frosting into the piping bag.

Step 12

Using the piping bag, frost a tight circular spiral around the top of the cookie.

Step 13

Sprinkle a dash of ground cinnamon on top of the cookies.

Step 14

Enjoy!