Making One Pot Skillet Lasagna is straightforward if you follow these steps:

1. Brown the Meat: In a large skillet, heat the olive oil over medium heat. Add the Italian sausage (or ground beef) and cook until browned, breaking it apart with a spoon in the process.

2. Add Aromatics: Stir in the diced onion and minced garlic. Cook until the onion is translucent, about 2-3 minutes.

3. Break the Noodles: While the meat is cooking, break the lasagna noodles into thirds to fit in the skillet.

4. Combine Ingredients: Add the broken noodles to the skillet. Pour in the marinara sauce and water (or broth). Stir well to combine.

5. Season: Sprinkle the Italian seasoning, salt, and pepper over the mixture. Stir again to ensure even distribution of the seasonings.

6. Simmer: Bring the skillet to a boil, then reduce the heat to low. Cover and simmer for about 15 minutes or until the pasta is cooked al dente, stirring occasionally.

7. Add Ricotta: Once the pasta is done, spoon dollops of ricotta cheese over the top. Gently fold it into the pasta mixture.

8. Add Cheeses: Sprinkle the shredded mozzarella and grated Parmesan cheese evenly over the top. Cover the skillet again for another 2-3 minutes until the cheeses are melted and bubbly.

9. Finish Cooking: Once the cheese is thoroughly melted, remove from heat. Allow it to cool slightly before serving.

10. Garnish: For an added touch, garnish with fresh basil leaves before serving.