1 cube real butter
1 c. Karo syrup
1/8 tsp. salt
Place the above ingredients in a saucepan, bring to a slow boil, and boil 6-8 minutes, STIRRING CONSTANTLY. Then add:
1 can sweetened condensed milk
1 tsp. vanilla
Turn heat down a bit, return to a soft boil, and cook 8-10 more minutes until very thick and the mixture has that golden, caramel color. STIR CONSTANTLY so that the mixture doesn't scorch.
Let cool about 10-15 minutes, then whisk in:
1 (8oz.) pkg. cream cheese
1 cup sour cream
Can serve warm or refrigerate and serve cold. Store in an airtight container in the fridge.