Add the steel-cut oats, water, milk, cinnamon, and salt to your pressure cooker.
1 cup steel-cut oats, 3 cups water, 1 cup milk, 1 teaspoon cinnamon, ¼ teaspoon salt
Stir everything together until well combined.
Close the pressure cooker and set it to cook on high pressure for 3 minutes.
Once the cooking time is up, allow the pressure cooker to naturally release the pressure for 10 minutes.
After 10 minutes, manually release any remaining pressure.
Open the pressure cooker and give the oatmeal a good stir.
If desired, add the honey or maple syrup and stir again.
1 tablespoon honey or maple syrup
Serve the oatmeal hot, topped with your favorite toppings.
Toppings of your choice