01 -
Combine butter and white chocolate in a microwave-safe bowl and melt in 20-second intervals, stirring well between each, until smooth.
02 -
In a separate bowl, whisk together eggs, brown sugar, and granulated sugar until the mixture becomes thick and creamy.
03 -
Gradually add the melted butter and white chocolate mixture into the egg and sugar blend, folding gently to combine.
04 -
Sift together flour, matcha powder, baking powder, and salt, then gently fold into the wet mixture until just combined, avoiding overmixing.
05 -
Pour batter into a parchment-lined baking pan and bake at 325°F (165°C) for 25-30 minutes until edges are set but center remains slightly soft.
06 -
Allow to cool completely, then refrigerate for several hours or overnight to achieve clean brownie slices.
07 -
Remove from fridge, slice into 16 portions, and serve.