Garden Vegetable Lasagna

Bahan-bahan (12 porsi)

• 2 cups chopped onion
• 4 medium garlic cloves, (minced)
• 2 teaspoons olive oil, (divided)
• 2 cups chopped zucchini
• 2 cups chopped yellow squash
• 2 cups thinly sliced carrot
• 2 cups chopped broccoli
• ½ teaspoon salt
• ½ cup all purpose flour
• 3½ cups 1% milk
• ½ cup freshly grated Parmesan cheese
• ½ teaspoon salt
• ¼ teaspoon freshly ground black pepper
• dash of ground nutmeg
• One 10-ounce package frozen chopped spinach, (thawed and squeezed dry)
• 1½ cups 1% low fat cottage cheese
• 2 cups shredded part-skim mozzarella cheese, (divided)
• 9 pre-cooked lasagna noodles, (divided)
• ½ cup freshly grated Parmesan cheese