Stove Top Method: Place pecans in a large skillet over medium heat. Cook, stirring frequently, until fragrant and darker brown in color, about 5 minutes. Remove from the pan and let cool completely.
Oven Method: Preheat the oven to 350°F. Spread the pecans onto a baking sheet. Bake for 5 to 10 minutes, stirring after 4 minutes, until fragrant and darker brown in color. (You should also hear them sizzling!). Let cool completely before using.