Preheat oven to 180C. Grease 8 holes of a large muffin tin.
Place oats, wholemeal flour, quinoa flour, baking powder and sugar in a bowl. Make a well in the centre. Whisk the oil, eggs, yoghurt and honey together.
Add the egg mixture to the dry ingredients and stir to just combine. Add the mixed berries and fold together gently. Spoon the mixture evenly into the muffin tins. Bake for 30-35 minutes or until golden and just firm to touch. Leave to cool in the tin before turning out.