Spread a thin layer of ragù on the bottom of the baking dish.
Cover the ragù with keto lasagna sheets, making sure that there are no gaps showing. You may need to trim the lasagna sheets to fit your baking dish.
On top of the lasagna sheets, add another layer of ragù, a thin layer of bechamel, and some grated parmigiano-reggiano. NOTE: Keep the layers of ragù thin. Depending on the size of your baking dish, you might not use all of the sauce.
Add another layer of lasagna sheets and repeat. The top layer should end with the ragu, bechamel, and a heavy grating of parmigiano-reggiano.
Bake uncovered for 30-35 minutes until top is brown.
Remove from oven and let sit for about 20 minutes. Do not skip this step! This is very important to allow the lasagna to firm up and hold together once you cut into it.
Enjoy!
Once the egg noodles have cooked. Carefully cut into your desired size of lasagna sheet.