Line a baking sheet with parchment or wax paper and set aside.

In a microwave-safe bowl, combine the chocolate chips, peanut butter, and butterscotch chips. Microwave in 30-second intervals, stirring in between until smooth.

Stir in vanilla extract.

Fold in the chow mein noodles gently, coating them completely.

Use two spoons or a scoop to drop small mounds onto the prepared baking sheet.

Sprinkle each haystack with sugar crystals.

Chill in the refrigerator for at least 30 minutes or until set.