I figure this is probably one that everybody knows and has been curious about, so it makes an appropriate first post. I got this recipe from Sandra Lee of the Food Network whom I normally despise but have to give kudos to for this one. I came across a few different recipes for it but I liked this one best... unfortunately. Perfect for the holidays!
1/4 cup unsweetened condensed milk
1/4 cup butterscotch topping
2 tablespoons whipped butter, room temperature
1 1/2 cups vanilla cream soda
Combine condensed milk, butterscotch topping, and butter in a glass heatproof measuring cup. Heat in microwave for 1 minute. Remove and stir until butter has melted and incorporated into mixture. Meanwhile heat cream soda in another heatproof measuring cup for 1 minute 30 seconds. Divide butterscotch mixture between 2 (10 to 12-ounce) mugs. Fill mugs with heated cream soda and stir thoroughly. Serve garnished with a cinnamon stick or an old-fashioned butterscotch candy stick.