Four Cheese Sausage & Spinach Lasanga

Bahan-bahan (8 porsi)

• 1 box dried lasagna noodles (about 18 noodles)
• 10 oz frozen spinach, thawed, drained well, and pat dry
• 1 lb mozzarella cheese, sliced
• 8 oz provolone cheese, sliced
• Parmesan cheese, to top
• Fresh basil, to top
• 1 tablespoons olive oil
• 1 lb sweet Italian sausage, removed from casings
• 10 oz diced prosciutto
• 1 medium onion, chopped
• 4 cloves garlic, minced
• 2 tablespoons tomato paste
• 2 (28 oz) cans whole Roma tomatoes and their juices
• 1 teaspoon sugar
• 2 teaspoons Italian seasoning blend
• 1 teaspoon salt
• 1/4 teaspoon pepper
• 1/4 teaspoon crushed red pepper flakes
• 28 oz Ricotta cheese
• 2 egg yolks
• 1 cup fresh basil leaves, chopped and packed
• 1 pinch nutmeg
• 1/2 cup freshly grated Parmesan cheese
• 1 teaspoon salt
• 1/4 teaspoon pepper