01 -
Preheat oven to 177°C. Lightly coat a 20x20 cm baking pan with non-stick spray and line with parchment paper, ensuring an overhang for easy removal.
02 -
Melt the unsalted butter in the microwave in 1-minute increments (1–2 minutes total) or gently on the stovetop, until completely liquid.
03 -
In a medium bowl, mix white chocolate chips with matcha powder. Pour the warm melted butter over and stir until the chocolate is fully dissolved and the mixture is smooth.
04 -
In a large mixing bowl, combine granulated sugar and brown sugar. Add eggs and beat on high speed for 3–5 minutes until the mixture becomes thick, pale, and volumized.
05 -
Gently mix the matcha-white chocolate ganache into the sugar-egg mixture until uniform. Add vanilla extract and stir until blended.
06 -
Sift all-purpose flour and kosher salt directly into the mixture. Using a rubber spatula, fold together gently until just combined, maintaining as much aeration as possible.
07 -
Transfer batter into the prepared pan, spreading evenly. Bake on the center rack for 20 minutes at 177°C. Remove and sharply tap the pan on the counter 2–3 times to release trapped air bubbles.
08 -
Return the pan to the oven and continue baking for an additional 15 minutes. Remove, tap the pan again on the counter 2 more times, then allow brownies to cool in the pan for 1 hour or until fully at room temperature.
09 -
Lift cooled brownies from the pan using the parchment paper overhang. Slice into squares with a sharp knife, cleaning the blade after each cut for neat edges.