Insert wooden sticks into the tops of the apples.

In a saucepan, combine sugar, butter, corn syrup, and salt over medium heat.

Stir until the mixture comes to a boil, then stop stirring and let it boil for about 5 minutes until it reaches a golden color.

Remove from heat and stir in vanilla extract.

Dip each apple into the caramel, allowing excess to drip off.

Place the coated apples on a baking sheet lined with parchment paper to cool.