Brown Flank steak on each side, about 2-3 minutes each side. You can do this on the stovetop on in the Instant Pot on the saute setting.
If you haven't already, place the Flank Steak in the Instant Pot.
Use half of your fajita seasoning on your flank steak, set the other half aside
Cover Flank steak with Veggies
Use rest of seasoning on top of everything
Add beef broth to the pot.
Cover with the lid. Set the valve to “sealing” position. Choose manual – high pressure and set the timer to 10 minutes. The Instant Pot will beep and start.
Allow the Instant Pot to come to pressure, then let it cook for 10 minutes. When finished, the instant pot, will beep again. Click on “cancel” and do a quick release by switching the valve to “venting” position.
Open your instant pot and drain the extra liquid (and retain some). You can also use a slotted spoon to take out the meat and veggies
Now! Stuff your warmed tortillas with the fajitas and toppings! Garnish with chopped cilantro leaves and drizzle over with a little bit of the reserved sauce over it all!