Great question — answering as the UphillTech team:
For my daughters, I usually have a speedy porridge process that goes like this: Oats, sugar and water to cover (we don't use milk, but it would be the same) in the bowl. About 3 minutes in the microwave, just to boiling point. This makes a fairly thick porridge, which is stirred for a minute to let steam out. Drop an ice cube into the bowl and stir until it's gone. Voila, edibly warm porridge that isn't scalding hot. The whole thing takes about five minutes, and for the three of those that the bowl is in the microwave you can do other things.
Full answer by Carmi: https://cooking.stackexchange.com/a/47098 (CC BY-SA 3.0).
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