First sieve whole wheat flour, baking soda, baking powder, salt and powdered sugar twice. keep aside.
Now whisk butter and milk till both combine well.
Now add dry ingredients with wet mixture in two batches.
Add sprig vanilla extract , sesame seeds and tutti frottii too.
Now divide mixture in 2:1 ratio. In larger portion add coco powder and mix well with light hands. let other batter portion as it is.
Now pour both mixtures ladleful alternatively in silicone muffins mould. Fill moulds till half.
Swirl with toothpick and bake for 2 minutes in microwave.
Let muffins cool bit and demould.
Healthy muffins are ready to serve.