In a large skillet or pan, combine the walnuts, syrup, vanilla, salt, and cinnamon. Cook over medium heat for 8 to 10 minutes, stirring continuously, until the maple syrup begins to caramelize and the walnuts are toasted.
4 cups walnuts, 3/4 cup pure maple syrup, 1/2 teaspoon pure vanilla extract, 1/4 teaspoon kosher salt, 1/4 teaspoon ground cinnamon
Transfer the hot walnuts to the prepared baking sheet and arrange in an even layer. Allow them to cool completely before serving.
Notes
*The calories listed are an approximation based on the ingredients and a serving size of 1/4 cup of candied walnuts. Actual calories will vary.*The snack can be store on your counter top in a sealed container for up to 5 days.