Valentine’s Strawberry Banana Smoothie with a Secret Twist 💕🍓🍌 Here’s how I made it extra special (and still super simple): First, I spooned some soft vegan marshmallow fluff inside the cup and shaped it into a heart on the inner wall of the glass. Then on the outside of the cup, I traced a heart over it with a black marker so I could see exactly where to build the design. Next, I warmed the vegan marshmallow slightly and dipped my milk frother into it. I placed the frother inside the empty c