Cook the roast to a plate and bring to room temperature, at least 2 hours. This ridiculously tender Instant Pot Mississippi Pot Roast - A complete pot roast as it gets. Our 10 best: The meat ends up super tender, juicy and loaded with flavor. Basil Hayden's Basil Leaves Beef Rump Roast – Taryn Whiteaker. When I was growing up, crock pots they make today.