In a saucepan, cook together the corn syrup and sugar over medium heat stirring frequently until the mixture comes to a boil.

Remove from the heat and stir in one cup of peanut butter. Mix in 6 cups of crisp rice cereal.

Press the mixture into a well greased 9x13 inch pan.

In a mixing bowl, combine the remaining 1 1/2 cups peanut butter, melted butter and powdered sugar.

Smooth the peanut butter topping evenly over the rice crispy treats.

Place the chocolate chips in a microwave safe bowl and microwave at 50% power in 30 second increments until the chocolate is completely melted and smooth.

Pour the chocolate over the peanut butter filling and top with m and m's.

Allow to cool completely to set up.

Store somewhere cool.