This Instant Pot Mississippi Pot Roast is a flavorful, tender, and easy-to-make comfort dish. Featuring chuck roast seared for a rich crust then simmered under pressure with pepperoncini, ranch, and au jus seasonings, it delivers a tangy and savory experience in under 2 hours. Perfect for a hearty weeknight dinner, this recipe utilizes the Instant Pot for speed and convenience, finishing with a luscious butter-flour gravy to drizzle over the shredded meat.