Heat oil in large non stick skillet over medium heat. Add zucchini, onion and garlic; cook, stirring until golden brown and soft, about 6 minutes. Transfer mixture to 9 inch (23 cm) glass pie plate sprayed with cooking spray. Sprinkle with goat cheese, sun dried tomatoes and olives. Whisk together eggs, milk and basil in large bowl. Season with salt and pepper. Pour egg mixture over zucchini mixture. Bake in preheated 180° C (350° F) oven until set in centre, about 35 to 40 minutes.