Rocky Road Halloween Squares

1 (12 ounce) package semisweet chocolate chips
1 (14 ounce) can sweetened condensed milk
2 tablespoons butter
2 cups dry roasted peanuts
1 (10 1/2 ounce) package white miniature marshmallows
Assorted soft Halloween candy

In top of double boiler melt chocolate with milk and butter, remove from heat. In a large bowl, combine nuts and marshmallows. Fold in chocolate and press into a wax paper lined 13 x 9-inch pan. Top with candy pieces. Chill until firm, then cut into squares. Store at room temperature.