Preheat the oven to 350 degrees F.
In a wide, shallow pot, bring 2-3 litres of salted water to a boil. You'll be using this to cook the lasagna sheets 1-2 at a time, for 1-2 minutes each during assembly.
While cooking your first two lasagna sheets, pour a heaping cup of turkey sauce into the bottom of an oiled baking dish.
Lay down your first layer of cooked lasagna sheets over the sauce layer. Try to jigsaw the noodles together so you have an even layer without too much overlap.
Scoop a heaping cup of turkey sauce over the pasta and spread evenly.
Drizzle 1/2 cup of bechamel sauce evenly over the turkey sauce. If your bechamel is quite cold, it will have stiffened up a bit. You can warm it gently in the microwave or on the stovetop to make it easier to drizzle.
Sprinkle a third of the parmesan cheese over the bechamel, then repeat the layers. Skip the meat sauce in the top layer–finishing with pasta, bechamel, parmesan.
Place an oiled piece of parchment paper over the lasagna, and wrap the entire thing tightly with tin foil. Bake for 40 mins covered. Remove the foil and parchment and bake for an additional 20 minutes.
Let the lasagna rest for at least 20 minutes before cutting into it. Enjoy!!