Line an 8" square pan with aluminum foil. Leaving an overhang. Spray lightly. Set aside.
In a large microwave bowl.Combine P.B. corn syrup, br. Sugar on high for 1 minute to melt.Stop to stir. Mixture will be granular.
Return bowl to microwave for 1 more minute on high. Stir in vanilla. Stir in 3 cups rice krispies.Turn mixture into prepared pan.Packing down. Set aside.
In medium microwave bowl. Combine chocolate chips , P.B.on high for 1 minute to melt.Stop to stir.Chips may not be completely melted. Return to microwave 15 seconds bursts. Until chocolate I s melted Stir in 1 cups cereal.
Pour chocolate mixture over base. Packing down a little bit. Smoothing the top.
Place kit kats about 10 evenly & tightly spaced in rows over surface.Once all pieces are put down. Go back & push them down lightly so they embed into the chocolate crispy layer.
Cover & put in the refrigerator for 2-3 hours or overnight. They will keep for 1 week at room temperature, in fridge for 2 weeks, freezer for 6 month's.
