Add the following ingredients in the order shown to a high-powered blender:
1 cup water
1 scoop vanilla protein powder
1/3 cup oats (not the quick-cook kind)
1 teaspoon fish oil (healthy, but not required)
2 handfuls fresh spinach
1/2 frozen banana (unfrozen can work as well)
Blend well and serve. This is especially good in the morning with a cup of hot coffee. Enjoy!