Start with washing the herbs and ensure the excess water is removed. If it's clean, washing them isn't necessary. 

Place two layers of kitchen or paper towels on a microwave-safe plate. 

Put four to five herb branches on the paper towels.

Microwave it on high power for two to three minutes. 

Remove them from the microwave and let them cool for a few minutes. 

Store it in an airtight container.