set the trivet in the Inner Pot of the Instant Pot, add one cup of water to the bottom of the pot, set aside
cut the tops off the peppers, use a paring knife to gently remove the inner membrane of the peppers, and then shake the seeds out as needed
set the peppers aside
mix the ground turkey, rice, egg, bread crumbs, onion, garlic, and seasonings together
then mix in the squash and tomato sauce
divide the mixture between the four peppers, being careful not to pack it down
arrange the peppers on the trivet in the Instant Pot, top with the remaining sauce
place the lid on, set the knob to cook, press manual, and adjust the time to 11 minutes
let the pot do its work, when the timer goes off vent the lid carefully and use a meat thermometer to check the turkey, it should hit 165 to be considered cooked through
sprinkle the tops of the peppers with the Parmesan cheese, then place the lid back on and let it rest 2-3 minutes
use tongs to serve them