Whisk egg until frothy and the whisk in water and vanilla.
Whisk in flour and salt and let sit while slicing apples.Slice peeled apples into 1/2 inch thick slices (you will get about 4 slices per apple).Using varying sized biscuit cutters, cut rings out of apple slices, discarding smallest circle containing core.
Heat oil to 375 degrees.Dip apple rings into batter, letting excess drip off.Cook in oil in small batches, turning frequently to monitor browning.When the rings turn golden brown, remove to a plate and while still hot sprinkle generously with cinnamon sugar.
Serve immediately with warm drizzled sauce.Makes 16 apple rings serves 4 to 6.CINNAMON CREAM SYRUPIn a small saucepan, combine 1 cup sugar, 1/2 cup corn syrup and 1/2 teaspoon cinnamon. Bring to a boil, stirring for 3 minutes.
Remove from heat and cool for 5 minutes. Stir in 1/2 cup evaporated milk.