Direction

1. Line an 8×8 or 9×9 square pan with parchment paper and coat with cooking spray.
2. In a microwave safe bowl, combine the sweetened condensed milk, chocolate chips and butter. Microwave on high for 5 minutes.
3. Remove and whisk vigorously, adding the vanilla. If there are still small chunks, return to microwave for 30 seconds.
4. Transfer mixture to the prepared pan and sprinkle with mini chocolate chips, if desired. Press lightly into the tacky surface to stick.
5. Place in the refrigerator to set for an hour. Cut into 16 small squares.