Veggie Pasta Pie

Ingredients

• 1 tablespoon olive oil
• 1 cup onion, chopped
• 4 garlic cloves, minced
• 3 cups cooked linguine
• 1/4 cup fresh parsley, chopped
• 1 tablespoon lemon juice
• 1 1/2 teaspoons oregano, minced if fresh
• 1 1/2 teaspoons basil, minced if fresh
• 1/4 teaspoon fresh ground black pepper
• 1 cup ricotta cheese
• 1/4 cup parmesan cheese, grated
• 1 egg, lightly beaten
• 3 medium tomatoes, sliced
• 3 cups zucchini, sliced
• 1 1/2 ounces mozzarella cheese, shredded