Line a cookie sheet with wax paper and set it aside.

Place the chow mein noodles into a medium-sized mixing bowl and set aside.In a large microwave-safe bowl, combine the butterscotch chips and peanut butter. Microwave on 50% power for 1 minute, then stir. Continue microwaving in 15-second increments, stirring in between, until the mixture is smooth. (Note: some butterscotch chips may not fully melt, but that's perfectly fine for this recipe.)

Stir in the salt and vanilla until well combined.

Pour the peanut butter mixture over the chow mein noodles, gently tossing until the noodles are fully coated.

Using two spoons or a cookie scoop, drop spoonfuls of the mixture onto the prepared cookie sheet. Let them cool completely before serving.