Preheat oven to 375 Degrees F. While oven is heating in a large mixing bowl combine the eggs, vegetable oil, sugar and vanilla.
Once that mixture is combined well, add in baking powder, and flour.
The flour should be added little by little.
Mix combination well.
Fold in by hand, Mandarin Segments and Pecans, making sure to evenly distribute throughout mixture.
Spray a Large Baking tray(one that you can cut on, I use Stainless Steel) with non-stick spray
Roll mixture out of bowl onto pan and either make into ONE large log, flattened, or 2 large logs.
Make sure to shape each and flatten evenly in order to get this all uniformly baked.
Bake this for 30-35 minutes until you can see the top of this is lightly browned.
Bring out and allow to set for about 10 minutes, leaving OVEN on. (you just want to make sure that the cookie does not crumble from being cut too soon).
Once this has 'lightly' cooled, begin to slice, using a large knife and making the slices as uniform as possible. Place each slice on its side, sprinkle with the additional 1/4 C Sugar and return to oven. Turn Oven off once you replace the tray into the oven and allow the cookies to sit in oven for about 5 minutes more.
Bring back out of oven and allow to cool, then placing in a tight storage container, once cooled.