Ingredient option: You can substitute store-bought candied pecans and store bought vinegarette for a simpler prep.
Preheat oven to 325.
Spoon the sugar and cinnamon in a plastic bag. Mix it up and set it aside. Place the egg white in a bowl and add the pecans tossing to coat completely. Place the pecans in the plastic bag with sugar and cinnamon. Shake the bag to coat all the pecans. Spread them on a cookie sheet and bake for 20 minutes. Remove from oven and let them cool, breaking them up with a spatula.
Meanwhile, toss the pears, apples, greens, onion slices and cheese in large serving bowl. Add the pecans when they have cooled.
In a smaller bowl, whisk together the olive oil, vinegar, salt and pepper. Toss into the salad and serve immediately.