1/2	lb.	Butter
8	large	Mars bars
6	Cups	Rice krispies
1 1/2	Cups	Chocolate chips

Melt mars bars and butter together in a large pot over medium heat. Remove from heat and stir in Rice Krispies. Press into greased 9x13-inch pan. Melt chocolate chips and spread over base. Refrigerate until chocolate is set and cut into squares.