01 -
Preheat the oven to 350°F (175°C) and line an 8x8-inch baking pan with parchment paper. Set aside.
02 -
In a large mixing bowl, melt the butter and chopped chocolate in the microwave at 30-second intervals, stirring between each segment until fully melted and smooth.
03 -
Beat the granulated sugar and light brown sugar into the melted mixture using a hand mixer on medium speed until fully incorporated.
04 -
Mix in the eggs one at a time, beating after each addition, then stir in the vanilla extract.
05 -
Sift the cocoa powder and corn starch into the mixture and beat until smooth.
06 -
Pour the brownie batter into the prepared baking pan and spread it evenly using a rubber spatula. Sprinkle chocolate chips on top.
07 -
Bake in the preheated oven for 20 to 25 minutes. A film should form on top, and the center should no longer wiggle when done.
08 -
Allow the brownies to cool in the baking pan before slicing and serving.