It only takes me about 10 minutes to cook and devour my oatmeal. I just use the plain oats (5 minutes) and cook them on a stove top, but you could also use the quick cook (1 minute) and get more or less the same result. Here's my recipe for the 5 minute "old-fashioned" oats.
Boil 1-1.25 cup water with about 1.5 tsp cinnamon (helps regulate blood sugar)
When boiling add .5 tbsp butter and .5 cups oats
Cook 5 minutes
Remove from heat and add heaping spoonful of peanut butter.
Stir well until you get a thickened goo.
Add heaping spoonful of yogurt and stir well.
Add some nuts or fruit and some raisins. I use a few frozen strawberries. They soften because the oatmeal's hot and they cool the oatmeal enough for me to eat it.
The whole cooking process only takes about 8 minutes.
While the oatmeal cooks I am usually cleaning up in the kitchen, getting my lunch together, or getting my clothes together. I do this every day and have a little system so that I don't waste any time.