1 (12 oz.) pkg. semi-sweet chocolate pieces
1 c. chunky peanut butter
4 c. miniature marshmallows

Microwave chocolate pieces and peanut butter in 2 quart bowl on medium (50%) 2 to 3 minutes or until melted. Stir after one minute. Fold in marshmallows. Pour into 9 inch square buttered pan. Chill until firm. Cut into squares.