Hot Fudge Sauce (Melodie)

1 can sweetened condensed milk (14 oz.)

4-1oz. squares semisweet chocolate (or can use chocolate chips semi-sweet)

2 TBS. butter (no substitutes)

1 tsp. vanilla extract

In heavy saucepan, combine milk, chocolate and butter.  Cook and stir over medium-low heat until chocolate is melted.  Remove from heat, stir in vanilla.