Dredge patties in the two tablespoons of corn starch, Make sure to shake off any excess.
Turn Instant Pot onto sauté. When Instant Pot is hot, add two table spoons of butter.
In batches, place patties into cooking pot, brown on both sides and remove to a plate. Cook only 1-2 at a time to avoid breaking patties when removing from the Instant Pot.
Add the red wine and deglaze the Instant Pot.
Turn Instant Pot off and pour gravy mixture in. Then, give everything a good stir.
When timer is up, perform a quick release of pressure. Remove patties and turn Instant Pot off.
Turn Instant Pot back onto sauté. Remove one cup of broth from the pot and mix with 2 tablespoons of cornstarch. Add slurry back to pot and simmer for 3-4 minutes until gravy is thickened.
if you want to make your mashed potatoes in the instant pot at the same time, add a tall legged trivet and place a steamer pan on top with cubed potatoes. You will then just cook everything by following the above directions.