Begin by gathering a medium microwave-safe bowl. Add the butterscotch chips and creamy peanut butter together. Heat the mixture in the microwave at 30-second intervals. After each interval, take a moment to stir. Continue this process until the mixture turns smooth and fully melted, which should take about 1 to 1.5 minutes.
Once the mixture is melted and uniform, carefully remove the bowl from the microwave. Stir in the vanilla extract and add a pinch of sea salt. Mix thoroughly to ensure the ingredients are well combined.
Next, gently incorporate the chow mein noodles, shredded coconut, and mini marshmallows into the bowl. Use a spatula or wooden spoon to fold the ingredients together, making sure all the noodles and marshmallows are evenly coated with the butterscotch mixture.
With a spoon or cookie scoop, drop heaping tablespoons of the cookie mixture onto a parchment-lined baking sheet. Shape them into little haystack formations, spacing them out a few inches apart to allow for any slight spreading as they set.
Allow the cookies to cool at room temperature for about 30 minutes, or until they are firm to the touch. If you're looking to speed up the process, place the baking sheet in the refrigerator for about 10 to 15 minutes instead.
Once the cookies have cooled and set properly, carefully transfer them to a serving plate or a decorative cookie jar to enjoy.
Notes
For an eye-catching display, serve the cookies on a decorative platter. Enhance their appeal by garnishing with a sprinkle of additional shredded coconut or drizzling some melted chocolate over the tops before enjoying!