how long to cook pot roast
Best Answer: I cook my pot roasts in a foil covered casserole dish for 3 hours at 325 degrees. I put the roast in the pan and salt/pepper the top.I add water until it's halfway up the roast then I cover it tightly with the foil. It's usually pretty good to add an onion at this point.ating Newest Oldest. Best Answer: I cook my pot roasts in a foil covered casserole dish for 3 hours at 325 degrees. I put the roast in the pan and salt/pepper the top. I add water until it's halfway up the roast then I cover it tightly with the foil.