Wash peppers, remove tops, remove seeds, and clean the inside well by removing gently all the veins.
In a mixing bowl, combine raw meat, cooked rice, onion, tomato, garlic, tomato paste, seasonings, Worcestershire sauce, breadcrumbs, and parsley. Mix well to combine.
Stuff the bell peppers equally with the mixture.
Add a trivet or steamer basket to the Instant Pot.
Add 1 cup of water and place the peppers onto the trivet/steamer basket.
Close the lid, lock in place, and turn the knob to sealing. Hit the manual or pressure cook button and set for 5 minutes. Allow a 5 minutes natural release when cook time is up.
Using the handles of the trivet or steamer basket, carefully remove the peppers from the pot.