Line a baking sheet with parchment paper.

In a saucepan, combine sugar, corn syrup, and water. Cook over medium heat until the sugar dissolves.

Bring the mixture to a boil and cook until it reaches 300°F on a candy thermometer.

Remove from heat and quickly stir in the jelly beans until evenly coated.

Pour the mixture onto the prepared baking sheet and spread it out evenly.

Allow to cool completely before breaking into pieces.