Prep the Pan. Line a rimmed baking sheet with parchment paper.
Create the Syrup Base. Melt butter in a large nonstick skillet over medium heat. Stir in brown sugar, water, salt, and cinnamon. Cook, stirring, until the mixture bubbles and the sugar dissolves, about 2 minutes; stir in vanilla.
Coat the Pecans. Add the pecans and stir to coat. Continue to cook, stirring, for 2 to 3 minutes more, until the nuts are glossy and well coated. Watch closely so they don’t burn.
Cool and Separate. Remove from heat and spread the pecans on prepared baking sheet, separating any clusters with two forks. Allow them to cool completely (the glaze will keep hardening as they cool).
Storage. Once cool, store the pecans in an airtight container at room temperature for up to 1 week, or freeze for up to 3 months.
Video
Notes
Yield Information: Makes 3 Cups or 12, 1/4-cup servings.
Add Heat: For a sweet-spicy twist, whisk in a pinch of cayenne or chipotle powder with the brown sugar before boiling the syrup.
Storing: Keep praline pecans in an airtight jar at room temperature for up to 1 week. For longer storage, freeze them in a zip-top bag or freezer-safe, airtight container for up to 3 months; they thaw crisp in minutes.