How can somethng so simple be so amazing! A warm, toasty panini with perfectly cooked chicken, garden fresh tomato slices, creamy fontina cheese and fresh spinach leaves with an avocado aioli! You don't have to use a panini maker, I don't have one, just put a heavy object on the sandwich and use your skillet, I use a brick covered with foil. However you do it, you'll love this quick, easy, scrumptious sandwich!