Easy Fudge Sauce

I've made chocolate sauces before, but don't like that they're not creamy, thick or smooth (they usually turn out grainy for me). So I take this recipe from Avery below (which is a simple, yummy fudge) and just combine sweetened condensed milk, chocolate chips, and add milk to thin it.

Rocky Road Fudge

1 bag chocolate chips
1 can sweetened condensed milk
1 cup mini marshmallows
1 cup chopped nuts

Look at this cute Christmas idea for Rocky Road fudge--though you know I'd choose milk or dark chocolate over white any day!