Heat oil in a pan, add cumin seeds,hing and urad, let it splutter.

Then add finely chopped green chilli and capsicum to it and saute well.

Now add turmeric powder and salt to remain the green color as it is.

Now add chopped onion and saute till they turn translucent.

Now add masala powder.

Now add boiled, pealed and mashed potatoes and water.

Let it be boil till thickness.

Add finely chopped Coriander leaves, mix well. Keep the mixture aside.

I used ready buns. Cut the bun into half pieces.

Heat on iron tava both the sides.

Now stuff the bun, cover with another half, press softly. Aloo capsicum bun is ready. Serve hot.