This is a level 3 recipe (weight maintenance and active lifestyles). To make a lower-calorie smoothie, substitute skim milk for the 2%. You could also experiment with using defatted peanut flour in place of the peanut butter. Peanut flour provides yummy peanut flavor to recipes for far fewer calories than peanut butter. You may need to adjust the amount of peanut flour used in the recipe, however. It doesn’t tend to work as a 1:1 substitution for peanut butter.Nutrition information is for one serving of the recipe.