• Prepare the Gram flour and curd batter as mentioned in Khaman Dhokla recipe.
• Prepare the rice, dal and curd batter as mentioned in Khatta Dhokla recipe.
• Grease medium-sized plate with oil. Pour the white batter (of Khatta Dhokla) on to the plate until half full and steam them in the cooker/steamer for about 10 minutes or until it is half cooked.
• Remove lid and take the plate out. Spread a thick layer of green chutney evenly on top of the white Dhoklas. Pour the yellow batter (of Khaman Dhokla) on to it and rotate the plate to spread evenly.
• Replace the plate into the cooker and steam it for about 8 to 10 more minutes.
• Once done, take the Dhokla out and let it cool.

Seasoning

• Heat oil in a pan and add mustard seeds. Once it crackles, pour it on to the Dhoklas.

Garnishing

• Sprinkle chopped coriander leaves and grated coconut.
• Cut the Sandwich Dhoklas into cubes and serve immediately.