01 - Preheat oven to 350°F. Grease and flour a 9x5-inch loaf pan or line with parchment paper.
02 - In a large bowl, whisk together all-purpose flour, matcha powder, pumpkin pie spice, baking powder, baking soda, and salt until homogenous.
03 - In a separate medium bowl, whisk pumpkin purée, granulated sugar, light brown sugar, eggs, vegetable oil, whole milk, and vanilla extract until the mixture is fully blended and smooth.
04 - Fold the wet ingredients into the dry ingredients using a spatula, mixing just until combined to avoid overworking the batter.
05 - Pour the batter evenly into the prepared loaf pan. Smooth the surface and sprinkle pumpkin seeds and turbinado sugar on top, if desired.
06 - Bake in preheated oven for 50 to 55 minutes, or until a toothpick inserted into the center emerges clean or with a few moist crumbs attached.
07 - Allow loaf to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely. Slice to serve.