Mix Butter and Sugars

In the bowl of an electric stand mixer or large bowl with a handheld electric mixer combine the butter and sugars. Mix on medium for around 3 minutes, until light and fluffy.

Stir in the vanilla, egg, and egg yolk, making sure to mix until fully combined. Don't forget to scrape down the sides of the bowl to ensure everything is evenly combined.

Add Butter & Sugars

Step 2

Gently fold in dry ingredients.

Add Dry Ingredients 

Step 3

Fold in the Chocolate.

Add Chocolate Chips

Step 4

Pour cookie dough into prepared pan and use your fingers to gently press into an even layer.

Add Dough to Pan

Step 5

Pipe frosting on in any design wanted.

Add Frosting

Step 6