Pretty basic, but I like it a little thinner so I added another 1/4 cup of sour cream.

FYI:  Butterscotch vs Caramel
The flavor of caramel is characterized by caramelized white sugar independent of molasses, butter or even salt. Butterscotch sauce is made with dark brown sugar, butter, salt, and some cream. Caramel sauce does not have to include butter, but butter is an integral part of butterscotch.

Ingredients:  

• 1 c brown sugar, firmly packed
• 2 Tab butter
• 1/4 c sour cream
• 1 tsp vanilla

Directions:

1. Mix the brown sugar, butter and sour cream together in a medium saucepan.
2. Cook the mixture on low heat.
3. Constantly stir the mixture for about 5 minutes or until the mixture has melted and is bubbling.
4. Remove from heat.
5. Add the vanilla.
6. Pour over dessert of your choice.

Servings: 4

Source:  Daisy.com