Butter or grease a 9x13 baking dish and set aside.

Measure out all of your ingredients.

In a large pot, heat the sugar and the corn syrup over medium low heat to dissolve the sugar and just to a boil. Stir continually so it does not burn.

As soon as the mixture barely boils, remove from the heat and immediately stir in the peanut butter and vanilla. Mix until mixture is well combined, smooth and creamy.

Stir in Rice Krispies until well coated.

Press mixture lightly into the greased 9x13 baking dish.

Place chocolate and butterscotch chips in a microwave safe bowl. Pour the oil over the top of the chocolate and butterscotch chips.

Microwave slowly and stir frequently.  When the mixture is melted, smooth, and creamy, spread over the peanut butter Rice Krispie treats. 

Note: go slowly and not on full power-if the chips get too hot the mixture will become thick, grainy and lumpy. It will be ruined and you will have to start over with the chips.

When the chocolate, butterscotch mixture is smooth and creamy, spread it over the peanut butter Rice Krispies treats.

Allow time for the chocolate to set up and the cut into 24 bars (or your desired number of bars).

If you want this to set up more quickly, you can place the baking dish in the refrigerator. Enjoy!