1Preheat oven to 175°C / 350°F. Grease and line an 8x8 inch pan with parchment paper.
2Prepare cream cheese layer: Whisk cream cheese, egg, vanilla, and sugar until smooth.
3Prepare brownie layer: Brown butter in a saucepan over medium-low heat, stirring every 10 seconds. Once milk solids from butter sink and turn golden brown, transfer to heatproof bowl.
4Add cocoa powder, oil, vanilla, and chopped chocolate; mix until dissolved. Let the mixture cool at room temperature for 15-20 mins
5Whisk eggs and light brown sugar for 4-6 min until dissolved and mixture turns into light pale in color.
6Add powdered sugar; mix until combined (1-2 min).
7Combine with browned butter mixture; mix until combined.
8Add flour and chocolate chips. Mix until just combined; don’t overmix the batter.
9Transfer half of brownie mixture to prepared pan.