Press the Sauté button, then press the Adjust button to “More” or “High”. When the display says “Hot”, add 1 Tbsp of the oil and tilt the pot to lightly coat the bottom. Add the sausage and cook for 3 minutes, or until beginning to brown on the edges.
Add 1/3 cup of the water, the zucchini, 3/4 cup of the green onion, and the oregano. Cook for 3 minutes, or until zucchini is tender-crisp, scraping up the browned bits on the bottom of the pan as it’s cooking.
Remove the sausage and zucchini to a medium bowl and combine with the hot sauce and remaining 1 Tbsp oil. Cover to keep warm.
Put a steamer basket in the Instant Pot and add the remaining water. Add thepotatoes to the steamer basket. Seal the lid and close the valve. Press the Cancelbutton and reset to Manual/Pressure Cook for 18 minutes. Use a natural pressure release for 10 minutes, followed by a quick pressurerelease. When the valve drops, carefully remove the lid. Remove the potatoeswith tongs (or a fork). Split the potatoes almost in half and fluff with a fork. Add the salt and pepper tothe sausage mixture and spoon equal amounts over each potato. Top with thecheese and remaining 1/4 cup of green onion.