01 - Preheat the oven to 350°F. Grease an 8-inch round cake pan and line the bottom with parchment paper.
02 - In a medium bowl, whisk together the flour, matcha powder, baking powder, and salt. Set aside.
03 - In a large mixing bowl, cream the butter and sugar together until light and fluffy, approximately 3 minutes.
04 - Beat in the eggs one at a time, ensuring each is fully incorporated before adding the next. Stir in the vanilla extract.
05 - Add half of the dry ingredients to the wet mixture, mixing until just incorporated. Pour in the milk and mix gently. Add the remaining dry ingredients and mix until smooth.
06 - Pour the batter into the prepared pan and smooth the top. Bake for 28 to 32 minutes, or until a toothpick inserted into the center comes out clean.
07 - Allow the cake to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.
08 - For the topping, whisk together powdered sugar and matcha powder. Dust the mixture over the cooled cake before serving.