Love this recipe, not just for my child but my husband too! They both love peanut butter so much they eat it out of the jar so I bump it up to 4 tbsp of peanut butter when I double the recipe and 2 tbsp of I make one serving. I also like to rate milkshakes and smoothies based on how easy it is to clean the blender afterwards. The clean up is easy a simple rinse and very light soap and you are ready to go. Will be a go to recipe!