Hopeless Fudge Frosting

Combine butter, milk, brown sugar, and cocoa in a heavy-bottomed saucepan over medium heat.

Stir constantly until the mixture comes to a full boil, then immediately remove from heat.

Allow the mixture to cool to room temperature, about 5-10 minutes.

Pour the cooled cocoa mixture into the powdered sugar and add vanilla extract.

Beat the frosting with an electric mixer on medium speed until it reaches a spreadable consistency, about 2-3 minutes.

If the frosting is too thick, add milk one teaspoon at a time and beat until the desired consistency is reached.

Use immediately on cooled cakes or cupcakes, as this frosting sets quickly.