1/2 c. sugar
3 (3 oz.) squares semi-sweet chocolate or 1/2 c. semi-sweet chocolate pieces
1/4 c. butter
1 (5 oz.) can evaporated milk (2/3 c.)
1 tsp. vanilla

In a 1 quart microwave dish or 4 cups glass measuring glass. Combine sugar, chocolate, butter, and milk. Microwave cook, uncovered, for 2-3 minutes (on high) until bubbly; stirring every minute. Cook on high 3 minutes more or until sugar melts and mixture is thickened, stirring once. Stir in vanilla. Serve warm over vanilla ice cream - DELICIOUS!