Vegetable Lasagna

Ingredients

• 2 cups ricotta cheese
• 1 cup shredded mozzarella cheese
• 1 cup grated Parmesan cheese
• 1 tablespoon chopped fresh parsley
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1/2 teaspoon garlic powder
• 1/2 teaspoon salt
• 1/4 teaspoon ground black pepper
• 2 tablespoons olive oil
• 1 pound zucchini, sliced
• 1/2 pound mushrooms, sliced
• 1 cup chopped onion
• 1 jar marinara sauce
• 1 pound lasagna noodles, cooked
• 1/4 cup grated Parmesan cheese