Notes: I used regular unsweetened cocoa powder, instead of Hershey’s Special Dark like with
these brownies to give them a slightly richer flavor.
Use
dark chocolate chips, not semi-sweet. The semi-sweet will make the brownies much milkier.
Do
NOT substitute brown sugar for the granulated. This mutes the chocolate flavor of the brownies.
Regular plain nonfat yogurt can be substituted for the Greek yogurt.