Step 1

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

Step 2

Using a standing mixer, beat the butter, sugar, light brown sugar, eggs, corn syrup, and vanilla until light and fluffy.

Step 3

Using a medium bowl, whisk the flour, cocoa powder, cornstarch, salt and baking soda.

Step 4

Gradually beat the dry ingredients into the wet until a dough forms.

Step 5

Using a medium cookie scoop, scoop out the dough mound into your hand and roll it into a ball.

Step 6

Place onto the cookie sheet and lightly press into a thick disk.

Step 7

Bake in the oven for 15-18 minutes or until firm around the edge

Step 8

Allow to cool completely.

Step 9

Using a standing mixer, beat the butter, powdered sugar, vanilla and whipping cream until combined, smooth and holds a peak.

Step 10

Scoop the frosting into the piping bag

Step 11

Pipe a tight spiral onto the top of the cookie

Step 12

Sprinkle chopped heath bars on top

Step 13

Enjoy!