In a large sauce pan, bring the first four ingredients to a boil over high heat. As soon as the mixture boils, remove from heat.
Spread mixture into the 9 x 13 pan. Immediately sprinkle the butterscotch and chocolate chips over the top. Using the back of a spoon, spread unevenly over the top as the chips melt
Recipe by The Gingham Apron at https://www.theginghamapron.com/scotcharoos/