Rocky Road Fudge

12 ounces semisweet chocolate chips
14 ounces sweetened condensed milk
2 tablespoons butter
2 1/2 cups mini marshmallows
1 cup salted peanuts

In a glass bowl, combine the chocolate chips, sweetened condensed milk and butter.  Microwave mixture in intervals, stirring every 30 seconds, until melted.

Add marshmallows and peanuts and mix to combine.  Pour fudge mixture into a greased 8 x 8 baking dish.  Refrigerate until firm, about an hour.

Store fudge in fridge until ready to serve.