Here is one, you are not cooking though. This is common in Nigeria, especially amongst college students.
SOAKED GARRI
1. Get garri (this is common in Nigeria and it is a cassava product).
2. Get sugar, about a tablespoon of sugar.
3. Get groundnut or you can try fried fish
4. Pour garri into a cup and add sugar. You can add milk if you wish.
5. Add very cold water to your already mixed garri and sugar.
6. You can eat with fried fish or groundnut. You might also use dankwa or kulikuli.
This process is very fast, with all the ingredients available, it should take about 1 minute.