Gluten-Free Scotcharoos--Thanks to Erewhon

I was so excited the other day while in Giant I saw this:First Rice Chex goes Gluten Free, and now a real crisped rice cereal! Life is looking up.
Rice Krispie treats are one of the things I miss being able to make for John, and myself. Especially the Scotcharoo kind. I LOVE butterscotch, and I love sugar. These are so good! And, they're better for you than regular rice krispies, so I didn't feel quite so bad adding all the sugar and fat, though, I try not to think too much about that stuff when I'm making treats.
So, for those of you who don't have the recipe for this great little treat, here is it. I actually still have it on an envelope from my neighbor Rachel when she gave it to me about five years ago.

First, grease well a 9x13 pan.
1 cup Karo syrup
1 cup sugar
Combine in a large saucepan, stirring occasionally, until it starts to boil. Add
1 cup peanut butter and mix until smooth.
Then add 6 cups crisped rice.
Mix all together and pat into the prepared pan. Let cool.

Melt together 1 cup butterscotch chips, and 1 cup milk chocolate chips. I just place them in a Pyrex measuring cup in the microwave for a minute, then more if they still need it. Mix them together until smooth and spread them over the cooled treats. Let the chocolate sit so that it hardens.