For kids who aren’t fans of peanuts, you can swap them for mini marshmallows, pretzel pieces, or leave them out entirely and add an extra 1/2–1 cup of chow mein noodles. If you prefer a little less sweetness, use lightly salted or dry-roasted peanuts and sprinkle a pinch of flaky sea salt over the tops before the haystacks set. For a more festive look at the holidays, gently press a few seasonal sprinkles or mini chocolate candies into the tops while they’re still soft. You can also do a half-and-half batch by melting 1/2 butterscotch chips and 1/2 peanut butter chips for a slightly richer flavor. To make them easier for very young kids to manage, form smaller bite-size clusters or spoon the mixture into mini paper cupcake liners so they’re easy to grab. Just remember to keep the base recipe at three items—butterscotch chips, chow mein noodles, and peanuts—and then any add-ins should be optional, so you still have that quick, addictive, three-ingredient treat you can throw together at the last minute.