Preheat oven to 350 degrees

Combine the milk and oats in a bowl and allow to stand for about 15 minutes.

Stir in the egg, honey, and cooled butter (or coconut oil) into the milk and oats mixture.

In another bowl, combine the flour, baking powder, matcha powder, and salt using a whisk.

Add the dry mixture into the wet mixture.

Stir until just combined.

Spray a muffin tin with cooking spray so that it evenly coats each cup, or place cupcake liners into the muffin tins.

Fill each cup of the 12-cup muffin tin with the batter.

Sprinkle each muffin with the extra oats and coconut sugar.

Bake for 20-25 minutes or until the tops of the muffins spring back when lightly touched, and a toothpick comes out clean when inserted.

Allow to cool completely.