In a large microwave safe bowl combine the 1/2 cup butter and 6 oz chocolate. Microwave for 30 seconds at a time stirring in between until the chocolate is completely melted. Up to 90 seconds total. Let the chocolate cool for 5 minutes.

Add 1 cup sugar, 3 eggs, and 1 tsp vanilla extract and whisk well to combine until frothy, about 1 minute.

Next add in the 1/2 cup flour, 1/4 cup cocoa powder, and 1/2 tsp kosher salt. Whisk until combined.

Pour the batter into the pan and spread evenly around with the back of a spoon. Set aside to make the cookie dough.

In a medium sized microwave safe bowl melt the 1/2 cup butter. Add the 2/3 cup brown sugar and 2 tbsp white sugar and mix till smooth.

Add the 2 egg yolks and 1 tsp vanilla extract and mix again.

Add in the 1 3/4 cups flour, 1/4 tsp baking powder, 1/2 tsp baking soda, and 1/4 tsp kosher salt and stir till dough forms.

Add in the 1 cup chocolate chips and mix well to ensure that the chips are sticking in the batter.

Using a small spoon ( a kitchen teaspoon) dollop small clumps of cookie dough on top of the brownie batter. It doesn’t have to be shaped into a ball.

Dollop all over the brownies using all the cookie dough.

Put the pan in the oven and bake for 30-35 minutes uncovered. Remove from the oven and let cool 15 minutes before cutting in to them. This helps them keep their shape!