Here’s 3 ways to makeover your pot roast leftovers! IngredientsPot roast leftover meatAll of the pot roast leftover juiceCornstarchRisottoMethodThis is the way my grandma likes to serve leftover pot roast. To begin, add a bit of oil to a skillet on medium heat, and add in your leftover pot roast. Once the gravy is as thick as you want it, and your pot roast is re-heated, serve it over risotto. How to make the Oliver Family Pot RoastNever cooked a pot roast before?