Caremello Slow Cooker Fudge

1 can of condensed milk
1 of the large block of Cadbury plain chocolate
2 blocks of normal size caramello blocks ( one in the freezer) and other one in the slow cooker with the plain chocolate and the condensed milk
Poured the cooked fudge into the tray waited about 15 to 20 mins when was cool but still soft then pushed in the frozen block of caremello and left over night to set.
The lady that suggests to freeze had a fish and chips shop and they freeze there mars bar to make the deep fried mars bars it works great im might try peppermint next time.