Combine condensed milk, chocolate chips and corn syrup in a microwaveable bowl.  Heat on high 1 to 2 minutes, stirring occasionally, until chocolate is melted.  Add Tone's Pure Vanilla Extract and a dash of of Tone's Cinnamon.

Serve over ice cream.  If not using immediately, refrigerate.  Microwave 1 to 2 minutes until sauce is warm and pourable.