Italian Zucchini Pie

Name: Italian Zucchini Pie
Prep time: 15 min
Cook time: 50 min
Total time: 1 h 5 min
Cuisine: Mediterranean, European, Italian
Ingredients: 4 cups unpeeled zucchini, thinly sliced; 2 medium onions, chopped; 1/2 cup (1 stick) butter; 1/2 cup parsley, chopped; 1/2 teaspoon salt; 1/2 teaspoon pepper; 1/4 teaspoon garlic powder; 1/4 teaspoon dried basil; 1/4 teaspoon dried oregano; 2 eggs slightly beaten; 2 cups shredded mozzarella cheese; 1 prepared 9-inch pie shell, unbaked; 2 teaspoons Dijon style mustard