K.U.
My all time favorite is:
1 cup skim milk
1 banana (best if you peel and then freeze the banana ahead of time--makes it more like a milkshake)
1/2 cup frozen blueberries
1/2 cup ice
1 T. honey (optional)
I don't know the exact calorie count...you could add protein powder if you wanted to. Sometimes I will substiture 1/2 cup yogurt and then only use 1/2 cup milk. It might not be very low cal, but it's healthy, fills me up and I avoid a lot of the carbs I would usually intake in the morning.
Another breakfast idea is to use natural applesauce instead of syrup on wheat pancakes.
Good luck,
K.