In a microwave or double boiler, melt chocolate chips and shortening.
15 to 20 minutes or until thickened.
Meanwhile, line a 9-inch square baking pan with foil; grease the foil and set
In a heavy saucepan over low heat, melt butter. Stir in marshmallows and butterscotch
chips until melted and smooth.
Place the popcorn in a large bowl; add marshmallow mixture and toss until coated.
Firmly press half of the popcorn mixture into prepared pan. Spread chocolate mixture
evenly over popcorn. Firmly press remaining popcorn mixture over chocolate.
for 30 minutes.
Lift out of pan, using foil edges. Remove foil; cut into bars.