Combine. In a large nonstick skillet, combine maple syrup, almonds, cinnamon, and salt. Stir to combine, until the almonds are evenly coated in the maple syrup mixture.
Cook. Stir the almonds over medium heat for 10-12 minutes, or so, until the liquid from the maple syrup has evaporated and the mixture starts to take on a powdery appearance. The nuts should smell cinnamon-y and toasty, with a thin, fine layer of the powdery maple layer left.
Spread. When there is NO more liquid left in the pan and the almonds look toasted, remove them from the heat and spread out on a parchment-lined baking sheet in a single layer.
Cool. Let the almonds cool COMPLETELY before serving for best results. You really want to let the coating set and give the almonds time to crisp up even more.
Serve & Store. Enjoy cooled almonds right away, or store in an airtight container at room temperature up to 1 week. (OR, freeze up to 2 months)