Step 1

Pre-heat oven to 400 degrees.

Step 2

Heat oil in a cast iron skillet, or other 12 inch skillet, to medium. Add onion and garlic and sauté for 3-5 minutes until lightly browned.

Step 3

Add ground beef and crumble with wooden spoon as it cooks for about 5 minutes until it's no longer pink.

Step 4

Drain about 1/2 of the grease and then add spinach and cook for another 1-2 minutes, stirring constantly until spinach is wilted.

Step 5

Add sauce, mix well, add dried herbs and mix and let simmer for 5-7 minutes.

Step 6

Meanwhile, add ricotta and 2 cups of mozzarella cheese to a small bowl and mix.

Step 7

Remove about 2/3 of the sauce from pan and add to a bowl, leaving about a 1/3 of it in the skillet.

Step 8

Add a layer of lasagna pieces then spread about 1/2 of the cheese over the noodles and top with 1/2 of the sauce in the bowl. Add another layer of lasagna pieces, the rest of the cheese, and then the rest of the sauce. Top with the 1/2 cup of remaining mozzarella cheese.

Step 9

Cover cast iron with lid or with aluminum foil and bake for 30-35 minutes.

Step 10

Top with fresh parsley or basil and serve and enjoy!