One of my secrets for better nutrition is to eat a better breakfast. Steel cut oatmeal is terrific and filling, especially when you add a banana or chopped up apple, and a yogurt or 1T maple syrup and 1/2 cup milk. You can make steel cut oatmeal ahead of time (1 c. oats to 3 cups water) and store in sealed container in fridge. Mush it up with a little water and microwave it 1.5 minutes til hot and then add the toppings you like.
It will last about a week in the fridge, and is best the first three days. If it smells sour, it's gone by. You will definitely know. So it's possibly to make 1-2 batches once a week to last all week for one person.