Peel and dice the potatoes into small cubes, add the potatoes and water to a medium sized stock pot.
Cook at a medium high heat until the water boils, turn the heat down, and continue to cook until the potatoes are soft.
Drain and set aside, once drained, pour the cooked potatoes back into the pot.
Clean and cut the onion. ( If using onion powder, skip the sauteing of the onion and garlic and just add to the cooked potatoes.)
If sauteing the onion and garlic, add to a large skillet with oil, cook until the onion is soft, and add to the potatoes.
With a immersion blender, puree the potatoes with salt, pepper, sauteed onion, garlic and oil and set aside.
The potatoes should have a smooth consistency with very little lumps.
Next, cook the lasagna sheets to the directions on the package.
Once the noodles are done, rinse with cold water, making sure the sheets are separated from each other.
Lay the sheets of lasagna noodles on to a large baking sheet and set aside.