01 - Preheat oven to 350°F. Line a 12-cup muffin tin with paper liners or lightly grease each cavity.
02 - In a large mixing bowl, whisk together all-purpose flour, matcha powder, baking powder, baking soda, salt, cinnamon, and nutmeg until evenly blended.
03 - In a separate bowl, combine pumpkin puree, non-dairy milk, light oil, sugar, vanilla extract, and apple cider vinegar. Whisk together until fully incorporated and smooth.
04 - Pour wet mixture into the dry ingredients. Gently stir with a spatula until just combined. Avoid overmixing to maintain a tender crumb.
05 - Fold in vegan chocolate chips or chopped dark chocolate if using.
06 - Divide batter evenly among muffin cups. Sprinkle pumpkin seeds on top if desired.
07 - Bake for 22 to 25 minutes or until a toothpick inserted into the center of a muffin emerges clean.
08 - Allow muffins to cool in the tin for 5 minutes, then transfer to a wire rack to cool fully before serving.