Preheat oven to 275˚F. In a small bowl, combine the granulated sugar, brown sugar, and ground cinnamon. Set aside.
Beat two egg whites until soft peaks form. Add the sugar mixture a little at a time while beating at medium-high speed. Beat meringue until stiff peaks form and the meringue is glossy. Beat in the vanilla extract. Fold the pecans into the meringue.
Pour the melted butter into a large rimmed baking sheet. Spoon the coated pecans over the butter in the pan in an even layer.
Bake at 275˚F for 1 hour and 15 minutes, stirring every 15 minutes, until the butter is absorbed and the glazed pecans are browned.
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Notes
Stored pecans in an airtight container at room temperature for 1-2 weeks, in the refrigerator for 2-3 weeks, or in the freezer for 1-2 months.Recipe adapted from Oprah magazine.