Preheat your oven to 350°F and line a 12-cup muffin tin with cupcake liners.
Prepare the brownie batter according to the box directions.
Fill each liner about ⅔ full with batter.
Bake for 18–22 minutes, checking at 18. The cupcakes are ready when the tops look set and a toothpick comes out slightly fudgy.
Let them cool in the pan for 10 minutes, then transfer to a wire rack. They’ll continue to firm up as they cool.
Once cooled, pipe a small puddle of melted white chocolate (or frosting) in the center of each cupcake to create the “melted snow.” Quickly place a Lindor truffle on top.
White chocolate sets firmer and holds the truffle in place really well.
Frosting works great too — it makes the snowman easier to remove and eat.
When the truffles are secure, pipe eyes and a mouth using dark chocolate and a tiny orange carrot nose using orange chocolate.
Decorating is easiest once the truffles are already sitting on the cupcakes, but you can pipe the faces ahead of time — just keep them stable so they don’t roll.