Rocky Road Candies

1 (12 ounce) package semisweet chocolate chips

⅛ cup butter

1 (14 ounce) can sweetened condensed milk

2 ½ cups dry-roasted peanuts

1 (16 ounce) package miniature marshmallows

Line a 9 x 13 inch pan with wax paper.

In a microwave-safe bowl, microwave chocolate and butter until melted. Stir occasionally until chocolate is smooth. Stir in condensed milk. Combine peanuts and marshmallows; stir into chocolate mixture. Pour into prepared pan and chill until firm. Cut into squares.