It's available for a limited time for $1.49 and also comes in a yogurt parfait version.
While the parfait comes in the same cup as the Fruit 'N Yogurt Parfait, the sundae comes in a wider, shorter cup than the standard sundae. Maybe it's to better hold the apples, I'm not sure.
I guess I could have bought some Apple Dippers and added them to my sundae.
Overall, McDonald's Caramel Apple Sundae is good, but more apples would make it much better. For that caramel apple taste at McDonald's, I'd go with the yogurt parfait version.
McDonald's Restaurant Locator
Nutritional Info - McDonald's Caramel Apple Sundae - 6.4 ounce (167g)
Calories - 330 (Calories from Fat - 80)
Fat - 9g (Saturated Fat - 4g)
Sodium - 120mg
Carbs - 55g (Sugar - 35g)
Protein - 7g