Brownie Cookie Bars

Brownie Batter

• 4 ½ oz dark chocolate chips
• 3 ½ oz unsalted butter, cut into pieces
• 3 ½ oz sugar
• 3 oz all-purpose flour
• 2 large eggs
• 1 tbsp unsweetened cocoa powder

Cookie Dough

• 4 ½ oz unsalted butter, cut into pieces
• 2 ½ oz dark brown sugar
  hoặc 2 ½ oz brown sugar
• 1 large egg
• 1 tsp vanilla extract
• 6 oz all-purpose flour
• 5 ½ oz dark chocolate chips