01 -
Preheat oven to 355°F using convection setting. Line two baking sheets with parchment paper.
02 -
Unroll pastry sheets, keeping them on their baking paper. Lightly flatten with a rolling pin to remove wrinkles.
03 -
Use a ghost-shaped cookie cutter or stencil to cut out ghost shapes. Reroll scraps for additional shapes.
04 -
For half the ghosts, cut two eyes using a small piping tip and a mouth with a larger tip. Reserve these pieces as pastry tops.
05 -
Arrange all cut pastries on a tray and refrigerate for 5 minutes.
06 -
Combine blueberries, sugar, cornstarch, and 1 teaspoon lemon juice in a medium saucepan. Cook over medium-high heat, stirring, for 5 to 8 minutes until thickened while keeping some berries whole. Remove from heat and let cool until gelatinous.
07 -
Spoon blueberry filling onto the center of pastry shapes without faces. Brush water along the pastry edges to help seal. Do not overfill to prevent leakage.
08 -
Place a face-top pastry over the filling, pressing along edges to seal. Crimp edges with a fork to secure.
09 -
Brush tops lightly with dairy-free milk and sprinkle with granulated sugar for browning.
10 -
Bake 5 to 6 pastries at a time for 15 to 18 minutes on the center rack until golden and crisp.
11 -
Let pastries cool on tray briefly, then transfer to a wire rack to cool fully.
12 -
Mix confectioners’ sugar with remaining teaspoon lemon juice until a pourable glaze forms.
13 -
Drizzle glaze over cooled pastries. Allow to set for at least 5 minutes before serving.