Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper for easy cleanup.
In a medium mixing bowl, combine the maple syrup, ground cinnamon, nutmeg, sea salt, and melted coconut oil (or butter). Mix until well blended.
Add the pecan halves to the mixture in the bowl, stirring gently until the nuts are fully coated in the maple cinnamon mixture.
If using brown sugar for extra sweetness, sprinkle it over the pecans and mix again to incorporate.
Spread the coated pecans evenly on the prepared baking sheet, ensuring they are in a single layer.
Roast in the preheated oven for 15-20 minutes, stirring every 5 minutes to prevent burning and ensure even roasting. The pecans should be golden and fragrant.
Remove the baking sheet from the oven and let the pecans cool completely on the sheet—this will allow them to crisp up.
Once cooled, break apart any clusters of pecans and store them in an airtight container for snacking or use as a topping for salads, desserts, or yogurt.
Notes
Allow the pecans to cool completely for maximum crispiness.