Inside Out Ravioli II

Preheat oven to 350 degrees F (175 degrees C).

Bring a large pot of lightly salted water to a boil. Add pasta and cook for 8 to 10 minutes or until al dente; drain.

Cook spinach according to package directions; drain.

In a skillet over medium heat, cook ground beef until brown; drain. In a large bowl, stir together cooked beef, spinach, pasta sauce and all but 1/4 cup of the Cheddar cheese. Reserve 2 cups of sauce mixture. Stir the pasta shells into the remaining sauce mixture. Pour shell mixture into a 9x13 inch baking dish and top with reserved sauce and sprinkle with reserved cheese.

Bake in preheated oven 45 minutes, until browned and bubbly.