Get a couple of sheets of wax paper or parchment paper ready.
Put 1 10-12 oz. bag butterscotch chips and 1 cup creamy peanut butter in a large microwave safe bowl. Microwave on high in 30 second intervals, stirring between each, until the mixture stirs smooth.
Add 12 ounces chow mein noodles. Stir to coat.
Drop rounded Tablespoons full of the mixture onto the wax paper or parchment paper. Continue until all of the mixture has been used. Cool at room temperature for 2-3 hours or put in the fridge for about 30 minutes to set.
Notes
Store haystack cookies in an airtight container for up to three days. You can keep them at room temperature, but you may want to put them in the fridge if your house is warm.
You can also freeze haystacks in a freezer bag for 1-2 months.
Feel free to try using different kinds of baking chips. Peanut butter, white, or chocolate would all be delicious.