1/4 c. butter
1 (10 oz.) pkg. marshmallows
6 c. Rice Krispies

In glass microwave safe bowl combine butter and marshmallows on high for 2 minutes. Stir until smooth. Cook 1 1/2 - 2 minutes longer on high. Stir. Add cereal and mix until well coated. Press into buttered 13x9x2 pan. Cut into squares when cool.