These fudgy and chewy brownies are made with Greek yogurt for a moist texture and rich chocolate flavor, with a moderate amount of sugar.
Sifting the cocoa powder prevents lumps and ensures a smooth batter.
Cooling the melted chocolate slightly is crucial to prevent seizing when other ingredients are added.
Do not overmix the batter once flour is added to keep the brownies fudgy, not tough.
Bake until a toothpick shows moist crumbs, as they will set more while cooling.