The Ultimate San Giorgio Lasagna: 5 Delicious Layers of Love

Ingredients

• 1 tablespoon olive oil
• 1 medium onion, finely chopped
• 2 garlic cloves, minced
• 1 pound ground beef
• 1 can (14 oz) crushed tomatoes
• 2 tablespoons tomato paste
• 1 teaspoon dried oregano
• 1 teaspoon salt
• ½ teaspoon black pepper
• 4 tablespoons unsalted butter
• ¼ cup all-purpose flour
• 2 cups whole milk
• 1 teaspoon nutmeg
• Salt to taste
• 9-12 lasagna noodles
• 2 cups shredded mozzarella cheese
• ½ cup grated Parmesan cheese