Zucchini "Lasagne"

Ingredients

• 3 1/2 tablespoons butter
• 1/3 cup all purpose flour
• 2 cups milk
• 1 pinch grated nutmeg freshly
• 1 1/2 ounces Parmesan cheese
• lasagne
• zucchini
• 1 tablespoon olive oil
• 2 onions finely chopped
• 2 cloves garlic finely chopped
• 1 carrot finely chopped
• 2 stalks celery finely chopped
• 3 slices bacon finely chopped
• 1 pound ground pork
• 1 pound ground veal
• 1 cup red wine
• 2 tablespoons tomato paste
• 27 ounces chopped tomatoes
• 3 medium zucchini sliced lengthwise
• 3 ounces mozzarella cheese grated