Preheat the oven to 340°F/170°C. Line muffin-cupcake tray with paper liners. Set aside. Sift whole wheat flour, oat flour, baking powder, baking soda, soda, sugar, salt, and matcha powder into a medium bowl.
1
In a separate small bowl, whisk together yogurt, oil, egg, and vanilla extract until combined.
2
Add the flour mixture to the yogurt mixture and gently fold until the batter is smooth. Avoid over mixing.
3
Divide the batter amongst 12 muffin liners.
4
Bake for 15-18 minutes until an inserted toothpick comes out clean.
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