This classic Italian dish is made with layers of pasta, beef, spinach, and cheese. Start by browning ground beef in a skillet. Add diced onions, garlic, and canned diced tomatoes. Simmer until the mixture thickens. Then, stir in chopped spinach and ricotta cheese. Layer the beef mixture with cooked lasagna noodles and shredded mozzarella cheese. Bake until the cheese is melted and bubbly.
