Healthy Recipes : Illustration Description This low calorie peanut butter banana spinach smoothie recipe is easy and delicious! And the spinach? You won't even know it's there! Smoothie Drinks, Breakfast Smoothies, Fruit Smoothies, Healthy Smoothies, Healthy Drinks, Banana Breakfast, Low Calorie Smoothies, Healthy Protein, Low Calorie Peanut Butter