1 cup oats
2 cups water
soak overnight.
am: add a cup of milk or water (or whatever liquid turns you on) and cook slowly stirr occaisionally or for a 'fluffy' porridge wisk continually - cook for as long as you want, up to 30 mins or 3 hrs, adding water as necessary.
Serve with anything you want, salt, honey, syrup, fruit, almond butter etc.
eat.
Then lie down for 4 hrs while you digest this. Wow, eating before running. 
100g oats = 360 kcal (this may vary depending on the oats you use of course)
7g fat; 11g protein, 61g carbs.