People are busy, and there is often no time to prepare a home-cooked meal. With a microwave cooking, complete and healthy meals can be made quickly, saving your family -- and your waistline -- from a constant diet of fast food. Converting conventional oven recipes, such as casseroles and stews, to microwave recipes can be completed once the microwave cooking time is calculated.
Locate the traditional cooking time of the food item. For boxed food, this can be found on the side or back of the box. For wrapped foods such as meats, the cooking time is located on a label. If no cooking time can be located on the item's packaging, consult a cookbook.
Set the microwave heat setting to "High." A microwave's highest power setting is the equivalent of a 375-degree conventional oven.
Divide the conventional oven cooking time by four. According to the University of Tennessee Extension Office, microwave cooking required one-fourth the time of conventional oven cooking. For example, if a recipe requires an hour of conventional cooking time, the microwave cooking time would decrease to 15 minutes.