DRAW out a map of your oven. Just a large rectangle will do. This is where you will write down the temperature information on your map. Record temperatures on the 3 or 5 locations in your oven.

SET the oven rack in the middle of the oven. For best results cook food in the middle of the oven for more even cooking.

PLACE your oven thermometer in the center of the oven.

PREHEAT oven to 350° Fahrenheit. Allow the oven to reach the temperature. Set the timer for 20 minutes after the oven registers 350° Fahrenheit.

After 20 minutes, CHECK the temperature of the oven thermometer and note it on your oven map.

MOVE the thermometer to the next location, using tongs or a potholder to prevent burns. Close the oven door and set the timer for 20 minutes.

After 20 minutes RECORD the temperature on your oven map.

CONTINUE to move the thermometer around the oven, wait for 20 minutes, and then check the temperature. Record the results on your oven map until you have checked all the oven spots.