Melt the chocolate and butter in a small saucepan, whisk until glossy and smooth.
Beat the eggs and sugar in a mixer with the whisk attachment until light and fluffy. The mixture should be pale yellow.
Add in the melted chocolate mixture. Mix until combined.
Combine the flour, cocoa powder, and salt in a bowl.
Add the dry ingredients mixture to the mixer.
Mix just until combined and a smooth batter is formed.
Spray a loaf pan liberally with non-stick spray.
Add in the brownie batter.
Bake at 350 degrees Fahrenheit for 20–30 minutes. (You want them to be slightly underbaked, so they are easier to scoop later.)
Let the brownies cool completely then scoop brownie balls with a cookie scoop.