**Smooth peanut butter works best as an ingredient. Crunchy peanut butter is best when you are eating it by itself or on toast.** - The smoothness of smooth peanut butter complements other food types in my opinion. It works well when used in sauces or in smoothies, or even on toast with chopped banana or something similar. - Meanwhile in my experience, the crunchiness of crunchy peanut butter makes for the best snack when eaten by itself — it's kind of both smooth and chunky, so it creates textual variation in itself. - Both types of peanut butter — unless loaded with sugar, like in some brands — are pretty good for you, and there are [minor nutritional differences] (https://coach.nine.com.au/diet/smooth-crunchy-peanut-butter/d113867e-15f7-43ba-be72-18494c7f31d3#:~:text=Between%20smooth%20and%20crunchy%20there's,it's%20an%20indisputably%20healthier%20choice.) between the two. Personally, I don't peanut butter-discriminate, and both types are great options. But if I'm cooking with it, I'll generally opt for smooth, and if I'm just going to slather some on a piece of toast and run, I'll go for crunchy.