In a large microwave-safe bowl, heat the chocolate chips, butterscotch chips, peanut butter and shortening in 30 second increments, stirring between each until smooth.
When smooth, add the chow mein noodles, folding until fully covered.
Using two spoons, make small mounds of noodles on a parchment or wax paper lined baking sheet.
Place haystack cookies in the fridge to set.
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