This simple smoothie will keep you satisfied for hours. It's filled with protein from chia seeds, nut butter, soy milk and unflavored protein powder, adding up to 29g. It also contains 13g of fiber from the banana, date, oats, chia seeds and spinach. With a good mixture of protein and fiber, this smoothie makes the ideal breakfast for a day at work or for a long day of hiking. For a post-workout snack, try making half of the recipe or saving the other half for later!