Preheat the oven to 350 degrees F. Line 2 sheet pans with parchment paper.

In a large bowl, melt 10 tablespoons of the butter in the microwave. Cut the remaining 4 tablespoons butter in to 6-8 pieces, add to the melted butter and stir (this helps to cool down the melted butter so it won't be too hot later when the eggs are added). Set aside.

In a medium bowl, whisk together the flour, cocoa, baking soda and baking powder.

Add the brown sugar, vanilla, red food coloring and salt to the melted butter. Stir well to combine. Add the egg and egg yolk and stir until smooth.

Add flour mixture and stir with a wooden (or sturdy) spoon just until combined and flour is incorporated. Add chocolate chips and mix just until incorporated.

Put red sanding sugar in a shallow bowl. Roll the dough into balls, about 1 ½ tablespoons for each cookie. Roll the balls in the sanding sugar until well coated and place on prepared baking sheets.

Bake the cookies, one sheet at a time, until they have puffed and have cracks running through the top, about 12-14 minutes. Be careful not to over bake the cookies or they will be dry. As soon as the cookies emerge from the oven place a Hershey's hug in the center of each cookie. Transfer the cookies to a wire rack to cool completely.