2 cups dark corn syrup
1/3 cup dark brown sugar
1/2 cup water
1 cup ground pecans
1 teaspoon vanilla extract

Combine syrup, sugar, and water in a medium saucepan over medium heat.
Bring to a boil; boil for 1 minute.
Remove from heat; stir in pecans and vanilla.
Pour syrup into hot jars, leaving 1/4 inch head space.