How to Make It
Place pecans in a large skillet and toast over medium heat, stirring occasionally, until fragrant and darkened in color, about 5 minutes.
Heat condensed milk, butter, sugar, corn syrup, vanilla, cinnamon, and salt in a medium saucepan over medium, stirring constantly, until butter is melted, about 2 minutes. Add chocolate chips and cook over low, stirring constantly and scraping bottom of pot to keep from sticking, until gently bubbling and thickened, about 5 minutes. Pour into a large bowl and stir in ½ cup pecans. Refrigerate until thickened, at least 2 hours or overnight.
Meanwhile, in a food processor, pulse the remaining 1 cup pecans until finely ground. Place in a medium bowl.
Scoop a rounded teaspoon of the mixture and roll into balls. One at a time, roll balls in pecans to coat. Arrange in mini cupcake liners or on a serving plate. Balls can be made in advance and kept in an airtight container for up to one month in the refrigerator.