Preheat oven to 350 degrees F.

Whisk together eggs and sugar until well mixed. Then, whisk in milk and coconut oil.

Sift the sweet rice flour, matcha, baking powder, and salt into the egg mixture. Whisk until the batter is smooth and all dry ingredients are well incorporated.

Line a muffin tin with 6 liners. Fill each cup ⅓ of the way full with batter. Roll a ball of red bean paste and place in the center of each cup. Divide the remaining batter into the cups to cover the red bean paste.

Bake for 20 minutes or until inserting a toothpick comes out clean. Remove from the oven and let cool for 10 minutes. Enjoy!