01 - Preheat oven to 375°F. Line a standard 12-cup muffin tin with paper liners or grease each well lightly.
02 - Whisk flour, matcha powder, baking powder, baking soda, salt, and granulated sugar together in a large mixing bowl until homogenous.
03 - In a separate bowl, whisk pumpkin purée, eggs, whole milk, melted butter, and vanilla extract until uniform.
04 - Gently fold wet mixture into dry ingredients using a spatula until just incorporated. Do not overmix to maintain tenderness.
05 - Evenly distribute batter among the muffin tin, filling each cavity about three-quarters full.
06 - Bake for 20 to 22 minutes, or until a toothpick inserted in the center of a muffin emerges clean.
07 - Allow muffins to cool in the pan for 5 minutes, then transfer to a wire rack to cool fully.
08 - In a small bowl, mix powdered sugar, milk, and vanilla extract until smooth. Drizzle glaze over cooled muffins prior to serving.