Preheat the oven to 425 degrees. Melt the butter in the butter warmer or saucepan.
Halve and pit each plum, and slice each half into 6 wedges. Place the wedges, 2 tablespoons of the sugar, and the ginger in one of the bowls and toss to combine.
Brush both sides of each wonton wrapper with a little melted butter. Place on the baking sheet and sprinkle them with 1 tablespoon of the sugar. Bake until golden brown, 3 to 4 minutes. Watch them carefully; after they brown, they will burn quickly.
Combine the heavy cream, vanilla, and the remaining 1 tablespoon sugar in the other bowl and whip with the mixer until soft peaks form.
To assemble the dessert, place 1 wonton on each of the dessert plates. Place 3 plum slices on top of each wonton, and top with a dollop of the whipped cream. Lay the remaining 4 wontons on top of each pile of fruit and cream, and place 3 plum slices and a dollop of whipped cream on the second wonton. Serve immediately.
Recipe courtesy of Instant Gratification, Lauren Chattman, William Morrow/HarperCollins