Sawsen's Buttercream

1 1/2 C butter, room temp

150 g milk, cool

15 g protein powder

330 g powdered sugar

2 t vanilla

Using a whisk attachment, beat butter until creamy.

Separately, combine remaining ingredients.

Slowly pour into beating butter.

It may first appear curdled and then lumpy.

Once smooth but still buttery, switch to paddle attachment.

Continue beating until light and fluffy.

Frosting should take 7-10 mins to come together in total.

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Note:  ABC uses 720 g sugar with this much butter.