Instant Pot:

1. In the bowl of a 6-quart Instant Pot or pressure cooker, stir together the steel cut oats and water. Secure the lid and turn the steam valve to seal.
2. Press the “pressure cook” button, then set the cook time to 4 minutes on HIGH pressure. The Instant Pot will read “ON” as it comes to pressure, which will take about 15 minutes. When the floating valve in the lid pops up that means the pot is pressurized and the countdown will begin.
3. When the cooking cycle is complete, allow the pressure to naturally release for 20 minutes.
4. After 20 minutes, turn the steam release valve to vent to release any remaining pressure. Carefully remove the lid and stir the oatmeal to incorporate any water on top. The oatmeal will continue to thicken as it sets.

Stove Top:

1. In a large pot over high heat, bring the water or milk to a boil. Stir in the oats and reduce the heat to low.
2. Simmer, uncovered, about 25 minutes, stirring occasionally. Simmer until the oatmeal is of desired consistency keeping in mind that the oatmeal will continue to thicken as it sets.