Remove apple stems and insert wooden sticks firmly.
Wash apples thoroughly and pat completely dry.
Spray parchment paper lightly with cooking spray.
Combine sugar, corn syrup, and water in saucepan.
Heat mixture over medium-high heat without stirring.
Attach candy thermometer to pan side carefully.
Cook until temperature reaches 300°F (hard crack stage).
Remove from heat and add food coloring.
Stir in vanilla extract quickly but gently.
Dip each apple into hot candy mixture.
Rotate apple to coat evenly all around.
Place coated apples on prepared parchment paper.
Allow candy coating to cool for minutes.
Gently wrap cotton candy around each apple.
Create colorful swirls with pink and blue.
Press cotton candy lightly to help stick.