Scrub potatoes and cut into chunks of approximately 1 inch each.
Place potatoes to Instant Pot and upload water and chicken broth. Mix in ranch seasoning and salt.
Secure lid and make sure vent is on sealing. Use manual/strain prepare dinner placing for 7 mins. When cycle is entire, do brief release and dispose of lid.
Add Parmesan cheese, ¼ cup at a time stir until melted. Repeat till all cheese is used.