Pre-heat oven to 350 degrees Fahrenheit.
Butter or grease a muffin tin.
In a large bowl, mix dry ingredients: Mochiko flour, sugar, baking powder, salt.
In a separate medium bowl, mix wet ingredients: coconut milk, melted butter, eggs, vanilla extract.
Slowly pour the wet ingredients into the dry ingredients, gently stirring and mixing as you pour.
Mix well until there are no lumps and the mochi muffin batter has a smooth, even consistency.
Pour the Mochi Muffin batter into each muffin cup in the prepared muffin tin.
Bake at 350 degrees Fahrenheit for 45 mins on middle oven rack.
Remove and let cool on wire rack to room temperature before serving.
Optional: Top with white and black sesame seeds and fine powdered sugar. Serve with your favorite hot drink, cold ice cream, or favorite fruits.