Mix butter, vanilla, milk, and merengue powder.

Slowly, mix in powdered sugar.

Notes: I find that the best consistency to work with is when you pile the frosting up and stick a butter knife in it. It should take between 6-10 seconds for the knife to drop over.

For chocolate buttercream add 2/3 c unsweetened cocoa powder. Can also use 1 c melted chocolate chips (melted and cooled).