Brown Sugar Oatmilk Espresso Recipe. When I first tried the new Starbucks Brown Sugar Oat Milk Espresso, I thought “Thank the coffee heavens!” You get excited beyond belief when you find a good “go to” coffee drink that doesn’t actually stink: I suck as a barista. There’s no messing this one up. I wanted to learn how to make it at home because um, $6.75 for a small drink is um, yeah…INSANE. To each their own. I’m making this bad boy at home today! So What Is Brown Sugar Oatmilk Espresso Anyways I thought this would be a fun recipe to concoct at home because it’s cool owning an espresso…