Preheat oven to 400 degrees with rack in center. Using a mixer, beat egg whites and superfine sugar on medium just until combined and frothy, about 30 seconds.
Beat in flour and salt. Beat in butter, cream, and vanilla. Place stencil on a baking sheet lined with a Silpat (French nonstick baking mat). Spoon 1 1/2 teaspoons batter inside stencil, spread batter over stencil with an offset spatula, and carefully remove stencil. Repeat, placing at least 2 inches apart.
Bake just until golden around edges, 4 to 5 minutes. Working quickly, use an offset spatula to transfer tuiles to a wire rack to cool. Repeat with remaining batter.
Dust with confectioners' sugar.
I would imagine a flat graham cracker crust would be awesome underneath these, too, if you didn't want to bake the tuiles.
I would imagine a flat graham cracker crust would be awesome underneath these, too, if you didn't want to bake the tuiles.
How long in advance can you bake the arrows?