light & fluffy frosting, also known as a roux frosting, that uses a milk and flour paste instead of powdered sugar giving you a frosting that is airy and just the right amount of sweetness. —Raul Estrada
What You'll Need
Whisk together milk and flour in saucepan over medium heat until mixture thickens and a paste forms. Approximately 5 minutes.
In stand mixer bowl, beat together butter, sugar, vanilla, and salt on medium-high speed until creamy, scraping at the sides as necessary.
Add milk-flour paste until mixture is light and airy.