01 - Preheat oven to 350°F. Grease an 8-inch round cake pan and line the bottom with parchment paper.
02 - In a medium bowl, sift together the flour, matcha powder, baking powder, and salt. Set aside.
03 - In a large bowl, vigorously whisk the eggs and granulated sugar together until the mixture becomes pale and fluffy, approximately 2 to 3 minutes.
04 - Pour the melted butter and vanilla extract into the egg mixture, stirring until well combined.
05 - Alternately add the sifted dry ingredients and whole milk to the wet mixture, starting and ending with the dry ingredients. Fold gently just until combined to avoid deflating the batter.
06 - Pour the batter into the prepared cake pan, smoothing the top with a spatula to ensure an even layer.
07 - Bake for 30 to 35 minutes, or until a wooden toothpick inserted into the center of the cake comes out clean.
08 - Allow the cake to cool in the pan for 10 minutes, then invert it onto a wire rack to cool completely.
09 - Dust the cooled cake with powdered sugar and serve alongside freshly whipped cream or fresh berries if desired.