Scoop the vanilla ice cream into four balls and place them onto a baking sheet. Cover with plastic wrap and freeze for at least 1 hour, or until firm.
In a mixing bowl, crush the cornflakes into fine crumbs, then mix in the ground cinnamon.
Set up a breading station: In one bowl, place the flour. In another bowl, beat the egg with the milk. In the third bowl, place the crushed cornflakes.
Remove the ice cream balls from the freezer. Quickly coat each ball in flour, then dip into the egg mixture, and finally roll in the cornflake mixture until fully coated.
In a frying pan, heat the vegetable oil over medium heat until hot (around 350°F or 175°C).
Carefully place the coated ice cream balls in the hot oil, frying only 1 or 2 at a time to avoid overcrowding. Fry for about 10-15 seconds until golden brown, using tongs to carefully turn them if necessary.
Remove the fried ice cream with a slotted spoon and place them on a plate lined with paper towels to absorb excess oil.
Serve immediately, drizzled with chocolate syrup and topped with whipped cream if desired.