Avocados are a staple of the paleo diet and give smoothies a silky texture without affecting the flavor of the finished drink. Instructions: In a blender, combine avocado, frozen berries, cashew milk, ...

Fresh, frosty drinks when you want something fast and satisfying. I like to think of smoothies as the ultimate "choose your own adventure" concoction—you can make it with just about anything you want.

Dietitians share their top 7 smoothie ingredients for maximum nutrition, from antioxidant-rich dragon fruit to protein-packed cottage cheese.