Preheat your oven to 350°F (175°C).
Grease and line an 8x8 inch baking pan with parchment paper.
In a medium saucepan, melt the chopped chocolate and butter over low heat, stirring until smooth.
Remove from heat and whisk in the sugar until combined.
Add the eggs one at a time, whisking well after each addition.
Sift in the flour, cocoa powder, and salt, folding gently until combined.
Pour the batter into the prepared pan and bake for 25-30 minutes.
Allow the brownies to cool completely in the pan.
Once cool, cut the brownies into small squares, then form into balls.
Roll the brownie balls in chocolate sprinkles or cocoa powder to coat.
Chill the coated truffles in the refrigerator for at least 30 minutes before serving.