Preheat oven to 400 F

Brush cupcake pan with melted butter, set to side

In a bowl, mix flour, baking powder, sugar, matcha, and salt, until completely combined

In a food processor, mix milk, oil, and eggs, then pour into dry mixture. Mix until just combined.

Spoon some batter onto cupcake pan, top batter with marshmallow fluff, then top again with batter, and lastly, top it again with fluff

Bake muffins for 18-20 mins