I got this recipe from a blog called Food Mafia, I made this for the super bowl. They were really easy and yummy. I did make them in individual cookie size. Both kids and adults loved them.
Butter a large bowl, and measure out 6 cups of Chex cereal. Set aside. Butter a 9x13 dish, OR line a baking sheet with wax paper if you would like freeform scotcharoo's like the ones I made that are pictured.
In a small saucepan, combine the corn syrup and sugar over medium heat. Once boiling, immediately remove from heat and stir in 1½ cups of peanut butter. Pour over cereal and fold together. Pour cereal into the 9x13 dish, or use a large cookie scoop to drop cereal onto waxpaper. Use your hands to press together and form them.
Using a microwave safe dish or a double boiler, melt together chocolate chips, butterscotch chips, remaining ½ cup of peanut butter and vanilla. If microwaving, heat in 10 second intervals, stirring in between to prevent the chocolate from burning.
Once smooth, pour over cereal, or scoop onto the piles you have created.
Allow to cool completely at room temperature.
Notes
I only used 1 cup semisweet chocolate chips, 1 cup butterscotch chips and 1/4 cup peanut butter. This was plenty of chocolate and I even had some left.