As if butter doesn't taste good enough by itself- this is even yummier.
2 Stick Butter Softened
1/3 C Condensed Milk (chilled)
1/2 t Corn Syrup
3/4 t- 1 t Cinnamon (to taste)
Place all ingredients in a food processor and blend until mixture is smooth. Serve with hot rolls or muffins, remainder may be stored in refrigerator.