Start by spraying a glass pan and the bottom of a large spoon with cooking spray, which makes it much easier to press down the mixture, without having it stick. Measure the Rice Krispies, crushed Keebler Ready Graham Pie Crust and chocolate bar(s) and mix them all together in a large bowl.
Combine the marshmallows and butter in a large bowl, and microwave for one minute. Stir and continue microwaving in 30 second increments until marshmallows are completely melted. Stir thoroughly and pour over cereal/graham cracker mixture. This is where you need strong arms – stir completely until cereal mixture is coated evenly and pour into greased glass pan.
Press down with the bottom of the greased spoon. Sprinkle with remaining graham cracker and chocolate pieces.