In a microwave-safe bowl, combine peanut butter and carob chips. (Making sure the carob chips are coated in peanut butter helps keep them from scorching in the microwave.) Microwave on high for 1 minute, stir, then microwave again for 30 seconds. Sitr. Carob chips should be pretty much completely melted. If you still see alot of chunks, microwave again for another 10-20 seconds.
Combine confectioner's sugar and a pinch of salt with your carob/PB mixture.
Add Rice krispies and stir until rice krispies are completely coated.
Press mixture into a square 9 X 9 baking dish (no need to oil the pan, as your PB and carob chips contain enough oil on their own), and place in the refrigerator for 30-60 minutes, until treats are slightly chilled, and solid.
Cut into squares and serve slightly chiled or at room temperature.