Easy Beef & Spinach Lasagna

(Adapted from http://www.cooksrecipes.com/gmeat/easy_beef_&_spinach_lasagna_recipe.html)

• 1 pound lean ground beef or ground white meat turkey (the kind of ground turkey with the lowest fat content)
• 1/4 teaspoon salt
• 1 jar (26 to 30 ounces) prepared spaghetti sauce (or more)
• 1/4 teaspoon ground red pepper
• 1 carton (15 ounces) part-skim ricotta cheese
• 1 package (10 ounces?) frozen chopped spinach, defrosted and well drained (Use your hands to squeeze out the water.)
• 1/4 cup freshly grated Parmesan cheese
• 1 box brown rice lasagna noodles (or regular ones)
• 1 1/2 cups shredded part-skim mozzarella cheese, or however much you want

Heat oven to 375°F. In large nonstick skillet, brown ground beef/turkey over medium heat 8 to 10 minutes or until no longer pink. Pour off drippings. Season beef with salt; stir in spaghetti sauce and red pepper; set aside.

Boil lasagna noodles until cooked.  There will be a few extras; you won't actually need the whole box.  Drain and use immediately.  (Otherwise they will stick together.)

Meanwhile in medium bowl, combine ricotta cheese, spinach, and Parmesan cheese.

Spread some beef sauce over bottom of a square baking dish (8x8"? 9x9"?). Arrange lasagna noodles lengthwise in single layer, tearing them as needed to fit in dish.  Spread entire ricotta cheese mixture over noodles; sprinkle with 1 cup mozzarella cheese and top with more beef sauce. Arrange remaining noodles in single layer; press lightly into sauce. Top with remaining beef sauce and sprinkle with remaining mozzarella cheese. [Note:  I think these directions were for layering in a 9x13" pan. For the square pan that I use, I think it's layered as follows:  beef, pasta, half the ricotta, mozzarella, beef, pasta, other half of the ricotta, mozzarella, beef, pasta, last of the beef, last of the mozzarella.]

Bake in 375°F oven 45 minutes or until cooked. Let cool for a bit before serving.