Melt chocolate with butter until smooth.
In a separate bowl, whisk together brown sugar, white sugar, vanilla, and eggs for about 5 minutes until pale and slightly fluffy.
Combine melted chocolate mixture to egg mixture and fold gently.
Fold in flour, cocoa powder and salt, just until combined.
Add parchment paper to a buttered and floured 7 by 7 inch pan.
Bake in a preheated oven at 350°F or 180°C for 25-28 minutes.
Let sit at room temperature for about 20 minutes.
Pour and smooth out the chocolate fudge on the brownies, then top with sprinkles.
Chill in the fridge for 2-3 hours before cutting them into squares.
