Melt butter & Mars bars over medium-low heat in large
saucepan until smooth. Remove from heat. Stir in Rice Krispies.
Press into greased 8inch by 8 inch pan.
Top with chocolate chips and place under broiler for 30 seconds.
Remove from oven and spread chocolate evenly over square.
Put in fridge to set chocolate (1/2 hr. to 1 hr.) Cut and serve.
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