Add olive oil, onions and garlic to a large pan. Sauté until onions are translucent.
Add ground turkey or beef to pan. Sprinkle with salt, pepper, and Italian seasoning. Cook until brown. Drain oil from the pan.
Add 1/4 cup of water and 2 cups of the spaghetti sauce. Break the lasagna noodles into 3 or 4 squares and layer them in the pan. They don't have to be perfect squares, just toss them in.
Cover the noodles with the remaining sauce. Top with a few fresh basil leaves. Cook until noodles are fork tender.
Add a layer of ricotta cheese and cook for about 5 minutes. Then sprinkle mozzarella cheese.
Add a few more basil leaves and cover until cheese melts.
Done in about 40 minutes, I promise this one pan wonder is the easiest lasagna you will ever make! Enjoy!