Chocolate Marble Cookies

Preheat the Oven:

Preheat your oven to 375°F (190°C). Line two baking sheets with parchment paper and set aside.

Prepare the Butter:

Remove the butter from the fridge and cut it into cubes. Place it in the bowl of a stand mixer fitted with the paddle attachment.

Melt the Chocolate:

In a microwave-safe bowl, melt 4 ounces of chopped chocolate or chocolate chips in 30-second increments. Stir between each cycle until smooth and shiny. Set aside to cool for 5 minutes while you make the dough.

Cream the Butter and Sugars:

Cream the butter with the granulated and light brown sugars for 3 minutes until lighter in color. Scrape down the sides of the bowl.

Add Eggs and Vanilla: