01 -
Combine 1 1/2 cups water, French onion soup, cream of chicken soup, and Au Jus gravy mix in the Instant Pot insert and whisk thoroughly.
02 -
Place the cubed steaks into the pot, ensuring each piece is coated evenly with the gravy mixture.
03 -
Close the lid, set the valve to "Sealing," and cook on Manual High pressure for 20 minutes. If a burn warning appears, wait a few minutes; the cooking will commence once pressure builds. Alternatively, release the lid carefully, scrape the bottom to remove stuck bits, add more water if needed, and retry.
04 -
Slowly turn the valve to "Venting" for a quick pressure release. Exercise caution when steam escapes. Open the lid only after the pressure fully releases.
05 -
Switch the Instant Pot to sauté mode. Remove the steaks and set aside. In a separate container, mix 1/4 cup water with 3 tablespoons cornstarch to form a slurry. Whisk the slurry into the gravy in the pot and stir continuously until it thickens.
06 -
Return the cubed steaks to the pot to reheat in the thickened gravy. Once warmed through, turn off the Instant Pot.
07 -
Plate the steaks topped with gravy, ideally accompanying mashed potatoes or preferred sides.