Preheat your oven to 350°F (175°C) and prepare a baking sheet with parchment paper.

In a mixing bowl, combine the granulated sugar, light corn syrup, melted unsalted butter, vanilla extract, and egg. Whisk until smooth and well combined.

Stir in the chopped pecans until evenly coated.

Unroll the Crescent Rolls and separate them into individual triangles on the baking sheet.

Spoon 2-3 tablespoons of the pecan filling onto the wide end of each triangle and roll it up carefully.

Bake the rolls for about 8 minutes, until they begin to set but are not yet golden.

Brush each roll with the reserved filling and return to the oven for an additional 5 minutes.

Let the rolls cool slightly before serving, optionally garnished with additional pecans.