Spinach Lasagna

Name: Spinach Lasagna
Prep time: 20 min
Cook time: 1 h 15 min
Total time: 1 h 35 min
Cuisine: European, Italian, Mediterranean
Ingredients: 15 lasagna noodles; 2 tablespoons olive oil; 1 cup chopped fresh mushrooms; 1 cup chopped onions; 1 tablespoon minced garlic; 2 cups fresh spinach; 3 cups ricotta cheese; 0.66666668653488 cup grated Romano cheese; 1 egg; 1 teaspoon salt; 1 teaspoon dried oregano; 1 teaspoon dried basil leaves; 0.5 teaspoon ground black pepper; 3 cups shredded mozzarella cheese; 3 cups tomato pasta sauce; 1 cup grated Parmesan cheese