Preheat the oven to 350 degrees F (175 degrees C).
In a large skillet over medium heat, saute the onion, bell pepper, mushrooms, and garlic in the olive oil until the vegetables are tender, about 5 minutes. Add the oregano, basil, salt, and pepper, and cook for another minute.
In a medium bowl, whisk together the eggs and half-and-half. Stir in the cooked vegetables, cheddar cheese, and Parmesan cheese.
Pour the egg mixture into the unbaked pie crust. Bake for 25 to 30 minutes, or until the quiche is set and the top is golden brown.
Let the quiche cool for 10 minutes before slicing and serving.
Interesting Facts
Quiche is a French dish that is traditionally made with eggs, cream, and cheese.
Quiche can be served hot or cold, making it a great make-ahead dish.
This vegetable quiche is a great way to get your daily servings of vegetables.