Start by creaming your butter and sugar together in a standing mixer. You should cream for 2-3 minutes until the sugar and butter are fluffy and lighter in texture & color.
Stir in your eggs & vanilla extract until just incorporated
Pour in the flour, cocoa powder & sea salt. Stir until completely combined.
Fold in the chocolate chips.
Dump your batter into a greased 9x13 pan
Bake for 45 minutes, or until the center is no longer giggly. You can test by sticking a fork in the center of your brownie pan. If the fork comes out with just a few brownie crumbs, it is ready!
Cool for 15 minutes before frosting.
In a standing mixer, add the room-temperature cream cheese and butter and whip to soften.
Add the powdered sugar and vanilla and mix until combined. Then, turn the mixer up to high and whip for 1-2 minutes until light and fluffy.
Spread on top of the brownies and top with sprinkles. Enjoy!