Lasagna Sayuran Panggang Gandum Utuh

Bahan-bahan (9 porsi)

• 6 cups fresh sturdy vegetables, chopped (red or yellow peppers, cauliflower, broccoli, carrots, etc.)
• 1 1/2 tablespoon olive oil
• 2 teaspoons salt (more to taste)
• 1 onion, minced
• 6 cloves garlic, minced
• 10 ounces whole wheat lasagna noodles
• 1 jar spaghetti or marinara sauce
• 1 2/3 cups ricotta cheese
• 1 egg, beaten
• 3/4 cup shredded mozzarella cheese