Preheat the oven to 350°F and line a muffin tin with muffin cups
In a medium bowl, whisk together the Mochiko, sugar, baking powder, baking soda, salt, and matcha powder
In a separate bowl, whisk together the eggs, vegetable oil, milk, and vanilla extract
Add the wet ingredients to the dry ingredients, working in batches. Stir until just combined.
Fill each muffin cup ¾ full with the muffin batter
Bake the muffins for 35-40 minutes or until a toothpick inserted comes out clean
Allow the muffins to cool on a wire rack for 5 minutes before serving