Parmigiana di Cipolla di Cannara / Onion Casserole from Cannara | Ciao Italia

Ingredients

• Cream Sauce
• 4 tbsp unsalted butter
• 1/4 cup all purpose flour
• 4 cups whole milke
• 1 tsp salt
• 1/4 tsp fresh ground nutmeg
• Filling
• 2 lbs red onions, peeled and cut into 1/4 inch thick rings
• 5 tbsp flour
• 1 to 1 1/2 cups vegetable oil
• 1/2 lb mozzarella cheese, diced
• 6 tbsp grated Parmigiano-Reggiano cheese
• Ragu Sauce
• 1 tbsp butter
• 1 large carrot, peeled and diced
• 2 ribs celery, diced
• 1 medium onion, diced
• 3/4 lb ground pork
• 1/4 lb ground beef
• 1/4 lb cooked ham, diced
• 2/3 cup dry white wine
• 4 large plum tomatoes, seeded and diced
• 1/2 tsp salt
• grinding of coarse black pepper
• 1/4 tsp nutmeg