Melt the butter

• Melt the butter and let it cool slightly.

Mix the wet ingredients

• Whisk the melted butter with the brown sugar and granulated sugar until smooth.
• Beat in the egg and vanilla extract until glossy.

Combine the dry ingredients

• In another bowl, whisk the flour, sifted matcha powder, baking soda and salt together.

Make the dough

• Fold the dry ingredients into the wet mixture until just combined.
• Stir in the chopped white chocolate chunks.

Chill the dough

• Cover the dough and refrigerate until firm.

Preheat the oven

• Preheat the oven to 180 °C and line the baking trays with baking paper.

Shape the cookies

• Roll the dough into balls and place them on the trays, spaced apart.

Bake

• Bake until the edges are set and the centres are still soft.

Cool

• Let the cookies rest on the tray, then transfer to a cooling rack.