In a medium saucepan, stir together pecans, sugar, corn syrup, melted butter, egg, vanilla, and salt. Bring to a boil over medium-high heat, stirring frequently. Reduce heat to medium-low; simmer, stirring constantly, until thickened, 3 to 4 minutes. Let cool to room temperature before using.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/pecan-pie-thumbprint-cookies-recipe/