Microwavable Chocolate Fudge

2 cups semisweet chocolate chips

1 (14 ounce) can sweetened condensed milk

2 teaspoons vanilla extract

1 ½ cups chopped walnuts

1 cup miniature marshmallows

Grease an 8x8 inch square pan.

Place the chocolate chips and sweetened condensed milk into a medium sized microwavable bowl. Microwave on high for 2 to 3 minutes, stirring occasionally, until smooth. Stir in the vanilla, then fold in the walnuts and marshmallows. Spread evenly into the prepared pan. Chill until set.