01 -
Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, allowing overhang for easy removal.
02 -
Melt unsalted butter in a medium saucepan over low heat. Remove from heat and whisk in granulated sugar until combined. Let cool slightly.
03 -
Whisk in eggs one at a time into the cooled butter mixture, then mix in vanilla extract.
04 -
In a separate mixing bowl, sift together all-purpose flour, matcha powder, and salt.
05 -
Stir the sifted dry ingredients into the wet mixture just until incorporated. Gently fold in chopped white chocolate.
06 -
Pour the batter into the prepared pan and smooth the surface. Bake for 22 to 25 minutes, until just set and a toothpick inserted in the center comes out with a few moist crumbs. Allow to cool completely in the pan.
07 -
Melt white chocolate in a heatproof bowl set over simmering water (double boiler) or in the microwave in short bursts, stirring until smooth.
08 -
Spoon or pipe melted white chocolate onto cooled brownies in ghost shapes. While chocolate is still soft, press mini chocolate chips or sesame seeds to create ghost eyes.
09 -
Allow chocolate ghosts to set completely, then cut the brownies into squares to serve.