When I was little we had to get up very early and go to school early because my mom worked. She would make breakfast around 2 times a week mixed with cereal on the other days. One of my favorite breakfasts was peanut butter toast with syrup. I had forgotten it until recently, and my kids enjoy it too. Plus it's fast and can be healthy depending on what you have on hand.
So, toast some bread. If using storebought bread one slice per child is enough. Then spread with any kind of peanut butter- all natural or whatever. Then cut into bite size pieces. Add syrup of choice or honey. I serve it with banana slices or orange slices and milk to drink.