Take your cream cheese out of the fridge to soften
Start melting your butter in a pan on the stove. Once melted, start stirring it over medium heat every couple of seconds. You will see a white foam coming from the top of the butter, that’s your water boiling off. The butter will turn quiet and start to develop brown bits on the bottom of the pan, when that happens your butter is done!
Add cinnamon to the hot brown butter and transfer the finished butter into a mixing bowl and let cool for about 10 minutes
Once cooled, add your slightly cool brick of cream cheese and get your hand mixer and start beating the fats together. (it will look broken for a few minutes, but trust the process and keep beating, it will come together)
Once beaten and airy, add your salt, vanilla, and powdered sugar, and beat until fluffy
Notes
This frosting is on the tangier side to let the cream cheese shine, but if you prefer a sweeter frosting feel free to add more powdered sugar and make it taste your own!