Preheat oven to 375 degrees F.
Line 2 jelly roll pans with parchment paper and lightly spray the parchment paper with non-stick spray. Set aside.
Add the eggs to a large mixing bowl or the bowl of your stand mixer. Using an electric mixer whisk on high for approximately 6 minutes until they are fluffy and turn a light yellow color.
Add the cake mix, water, and vegetable oil to the eggs and whisk on medium for 30 seconds then use a spatula to scrape the sides and bottom of the bowl to ensure all of the dry ingredients are incorporated into the eggs. Continue to whisk for 1 more minute. (See note 2)
Divide the batter evenly between the two prepared jelly roll pans (approximately 15.75 ounces of batter each).
Place the pans in the oven side-by-side and bake for 10-12 minutes or until the cake lightly bounces back after pressing in the center.
While the cake bakes lay out two clean dish towels and lightly dust them with the powdered sugar. This keeps the cake from sticking to the towels.
When the cake has finished baking remove the pans from the oven and very carefully flip each pan over onto the kitchen towel. Peel off the parchment paper.
Starting with a short side of the cake roll the cake up in the towel. Let the cake cool completely like that.
While the cake roll cools, make your pecan pie filling.
When the filling is ready gently unroll the cake. Spread the filling evenly over cake leaving a little space around the edges. You will use approximately 18 ounces of filling per cake roll.
Once filled gently roll the cake back up.
Using approximately ½ cup of cream cheese frosting per cake roll frost all sides of the cakes.
After frosting the cake rolls spread coat each with 1 cup of chopped pecans. You can do this by spreading the pecans on a clean surface and rolling the cake over them, or pressing the chopped pecans on the cake rolls with your hands.
Cut the ends off of the cake to give it a neat appearance and then serve cake immediately.