First, pour 1 ½ cups of milk into a microwave safe bowl. Ensure the bowl is not too shallow, or the porridge will boil over and make a mess in the microwave. Mix in the spices and 1 cup of oats, then microwave on high until the milk is absorbed and the oats are tender. This will take around 2 ½ mins. You can add some hot milk after cooking to thin out the cinnamon spice oatmeal to your preferred consistency.