For an evenly cooked roast, place the roast on the middle rack of the preheated oven. 6. Calculate the cooking time for your roast at 7 minutes per 1 lb. of meat (7 minutes per 453g). When you have cooked your roast to these specifications, turn the oven off but do not open the door or remove the roast.lace two teaspoons of oil (olive or salad) into the pot and add the roast. Heat it to a medium-high temperature. 4. Add the other ingredients to the pot. Once the meat has browned, add 2 1/2 cups (567ml) of water, two beef bouillon cubes and a bay leaf to the Dutch oven until it boils.