1. Whisk egg white until foamy; add pecans, and stir until evenly coated.
2. Stir together sugars; sprinkle over pecans. Stir gently until pecans are evenly coated. Spread pecans in a single layer in a lightly greased aluminum foil-lined 15- x 10-inch jelly-roll pan.
3. Bake at 350° for 18 to 20 minutes or until pecans are toasted and dry, stirring once after 10 minutes. Remove from oven, and let cool 30 minutes or until completely cool.
Note: Store pecans in a zip-top plastic freezer bag at room temperature up to 3 days or freeze up to 3 weeks.