Peanut butter sure is a versatile substance. I'm surprised to see Aussie Quilter in here, since I thought peanut butter was disliked in Australia (in favour of Marmite). But, it's in the dishes just north of Australia, such as Thailand and Vietnam, so why not south?
BTW - if you mix up a cup of beef broth and stir in a heaping tablespoon of peanut butter you'll have a fabulous peanut dipping sauce for those Thai and Vietnamese rolls.