I like simple. The easier, the better in my book.  Especially when you are running out of the house and have to be on the train in the next ten minutes for an 90 + minute commute. When I wake in the morning, it's too early for a heavy meal so I figured a way around it: make smoothies for breakfast. I make as I am leaving and drink it on my way to work. The plus side is that I get 2+ servings or fruit down in one serving and I have notice I have more energy than I use to. Here is my favorite one to make so far; I call it "Morning Glory":

Ingredients:
1 medium size banana (frozen)
1 cup of frozen mangoes
1 cup of unsweetened almond milk
1 scoop of any protein of your choice (I used Vega One Nutritional Shake in Vanilla Chai)

Directions:

Throw in a blender & enjoy!

If you want, you can add water to make it less thick.