Step 1

Arrange a rack in the middle of the oven and heat the oven to 350ºF.

Step 2

Line a rimmed baking sheet with parchment paper or a silicone baking mat. Add 8 ounces nuts and scatter 2 or 3 fresh thyme sprigs over the nuts. Roast for 5 minutes. Meanwhile, place 1 tablespoon unsalted butter, 1 tablespoon maple syrup, 1 teaspoon packed brown sugar, 1 teaspoon fleur de sel or flaky salt (or 1/2 teaspoon fine salt), 3/4 teaspoon ground cinnamon, and 1/4 to 1/2 teaspoon piment d’Espelette or cayenne pepper in a medium saucepan. Cook over medium heat, stirring, until the butter melts and the mixture is smooth. You won’t have much liquid, but it will be all that you need.

Step 3

Add the warm nuts and thyme to the saucepan and cook, stirring, until they are coated with the mix, 2 to 3 minutes. Return the nuts and thyme to the baking sheet and spread them out — they won’t bake well if they’re in clumps.

Step 4

Bake for 5 minutes. Stir and turn the nuts and bake until fragrant and deepened in color, 4 to 5 minutes more. Place the baking sheet on a rack and discard the thyme. Sprinkle with more fleur de sel (or fine salt), and let the nuts cool completely (they will initially be sticky but crisp up).