*For this recipe I used standard, sweetened commercially-produced peanut butter (Jif, I believe). If you prefer to use natural, unsweetened peanut butter, it would work well, but you will likely need to sweeten the sauce with sugar to get a flavor similar to the one in this recipe. This dish would be wonderful with the addition of shredded cooked chicken or any number of vegetables (red peppers or Chinese broccoli come to mind). Just add them to the sauce along with the noodles.