Prep the roast: Place your chuck roast in the Instant Pot and season generously with salt and pepper. To further lock in the juices and flavors, sear on all sides.
Add vegetables: Layer the sliced onion and baby carrots around the roast. You can tuck in herbs or garlic if you like.
Cook: Seal the lid and pressure cook for 45 minutes.
Natural release: Allow the steam to release naturally for about 20 minutes. This step keeps your roast tender and juicy.
Serve: Remove the roast and vegetables. The meat should be so tender it falls apart at the touch of a fork.