Delicious Spinach and Turkey Lasagna

Name: Delicious Spinach and Turkey Lasagna
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Cuisine: Italian
Ingredients: 9 whole-wheat lasagna noodles; 1 teaspoon olive oil; 0.5 cup chopped onion; 1 pound ground turkey breast; 3 cups tomato sauce; 0.5 cup sliced fresh mushrooms; 3 tablespoons Italian seasoning; 0.25 teaspoon ground black pepper; 0.25 teaspoon garlic powder; 6 cups chopped fresh spinach; 2 cups fat-free ricotta cheese; 0.25 teaspoon ground nutmeg; 2 cups shredded mozzarella cheese