To make a healthy smoothie that is balanced in nutrition, filling, and tasty, here's a Registered Dietitian's formula: Fruit and Veggies: Add 1-3 servings of fruit and/or vegetables. These can be fresh or frozen! Protein: Add a serving of protein. If your smoothie is acting as a meal, aim for 20-30 grams of protein in your smoothie. Fat: Make sure to include a source of healthy fats to your smoothie. Fibre: A little extra fibre helps to regulate digestion, keep your blood sugars balanced, and promotes good gut health. Liquid: Last but not least, a good smoothie needs liquid to blend! Try to choose a liquid without any added sugars if you can. I like to use unsweetened milks like dairy, soy or cashew, as well as 100% fruit juice, or even just water!