Brownie Cookie Bars

Name: Brownie Cookie Bars
Prep time: 10 min
Cook time: 50 min
Total time: 50 min
Yield: 9 pieces
Ingredients: 4 ½ oz dark chocolate chips; 3 ½ oz unsalted butter; 3 ½ oz sugar; 3 oz all-purpose flour; 2 large eggs; 1 tbsp unsweetened cocoa powder; 4 ½ oz unsalted butter; 2 ½ oz dark brown sugar; 1 large egg; 1 tsp vanilla extract; 6 oz all-purpose flour; 5 ½ oz dark chocolate chips