Refrigerate the dough for at least 30 minutes to prevent spreading and achieve those signature crispy edges with a fudgy center.

Roll dough balls in extra powdered sugar for a thick coating—this creates the beautiful crinkled texture that gives these cookies their signature appearance.

Combine ingredients until just incorporated; overmixing develops gluten and results in tough, cake-like cookies instead of chewy brownie texture.

Choose a premium brownie mix with cocoa richness and select olive oil with mild flavor to ensure the chocolate shines without competing tastes.

Remove cookies when edges are firm but centers still appear slightly underbaked—they'll continue cooking as they cool, yielding the ideal moist, fudgy interior.