Beat the butterAdd the softened butter to a large mixing bowl and beat on medium speed for 2–3 minutes, until it’s pale, whipped, and creamy. This creates that ultra-fluffy bakery texture.
Add the sifted powdered sugar gradually. With the mixer on low, add the powdered sugar one cup at a time, mixing fully between each addition. This keeps the frosting smooth and prevents clumps.
Mix in the vanilla. Add the vanilla extract and vanilla bean paste, then increase the speed to medium-high. Beat for 1–2 minutes until everything is well combined and speckled with beautiful vanilla bean flecks.
Adjust as needed. If the frosting feels too thick, add 1–2 teaspoons of milk or cream until you reach your desired consistency. If it’s too soft, beat in a little extra powdered sugar.