Spinach and Red Pepper Veggie Quiche

Ingredients

• 1 pie crust (store bought or homemade)
• 1 tablespoon olive oil
• 1 cup of chopped onion
• 1 cup chopped broccoli
• 1 cup chopped spinach
• 1/2 red bell pepper, chopped
• 4 eggs
• 1/2 cup milk
• 1/2 cup plain yogurt
• Cheese for topping
• 1/2 tsp salt
• pepper