Preheat oven to 350 degrees F. Line an 8x8 baking dish with parchment paper, making sure the parchment paper is hanging over the sides of the dish. Spray with nonstick cooking spray and set aside.

In a bowl, melt butter and chocolate in 30-second increments in the microwave or in a double broiler. Set aside to allow to cool.

In a stand mixer or in a bowl, vigorously beat eggs and sugar until the mixture is fluffy and light, about 5 minutes. Combine the cooled melted chocolate and vanilla with the egg/sugar mixture. Mix until smooth.

Fold in the flour, cocoa powder, and salt until well combined being careful not to over mix. Pour brownie batter into the baking dish.

Bake for 30 minutes or until the edges are baked through and a toothpick inserted in the middle comes out semi-wet. Allow to cool completely before slicing.

Enjoy!